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4: <title>The XMLHttpRequest Object</title>
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1.1 avankest 24: </head>
25: <body>
26: <div class="head">
27: <p><a href="http://www.w3.org/"><img height="48" width="72" alt="W3C" src="http://www.w3.org/Icons/w3c_home"></a></p>
1.12 avankest 28:
1.156 avankest 29: <h1 class="head" id="the-xmlhttprequest-object">The
30: <code title="">XMLHttpRequest</code> Object</h1>
1.12 avankest 31:
1.149 avankest 32: <h2 class="no-num no-toc" id="w3c-doctype">[LONGSTATUS] [DATE: 3 August 2002]</h2>
1.12 avankest 33:
1.1 avankest 34: <dl>
1.10 avankest 35: <dt>This Version:</dt>
1.153 avankest 36: <dd><a href="http://dev.w3.org/2006/webapi/XMLHttpRequest/">http://dev.w3.org/2006/webapi/XMLHttpRequest/</a></dd>
37: <!--<dd><a href="[VERSION]/">http://www.w3.org/TR/[YEAR]/WD-XMLHttpRequest-[CDATE]/</a></dd>-->
1.14 avankest 38:
1.10 avankest 39: <dt>Latest Version:</dt>
1.1 avankest 40: <dd><a href="http://www.w3.org/TR/XMLHttpRequest/">http://www.w3.org/TR/XMLHttpRequest/</a></dd>
1.14 avankest 41:
1.10 avankest 42: <dt>Previous Versions:</dt>
1.154 avankest 43: <dd><a href="http://www.w3.org/TR/2007/WD-XMLHttpRequest-20071026/">http://www.w3.org/TR/2007/WD-XMLHttpRequest-20071026/</a></dd>
1.133 avankest 44: <dd><a href="http://www.w3.org/TR/2007/WD-XMLHttpRequest-20070618/">http://www.w3.org/TR/2007/WD-XMLHttpRequest-20070618/</a></dd>
1.58 avankest 45: <dd><a href="http://www.w3.org/TR/2007/WD-XMLHttpRequest-20070227/">http://www.w3.org/TR/2007/WD-XMLHttpRequest-20070227/</a></dd>
1.22 avankest 46: <dd><a href="http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060927/">http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060927/</a></dd>
1.1 avankest 47: <dd><a href="http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060619/">http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060619/</a></dd>
48: <dd><a href="http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060405/">http://www.w3.org/TR/2006/WD-XMLHttpRequest-20060405/</a></dd>
1.14 avankest 49:
1.1 avankest 50: <dt>Editor:</dt>
51: <dd><a href="http://annevankesteren.nl/">Anne van Kesteren</a>
52: (<a href="http://www.opera.com/">Opera Software ASA</a>)
53: <<a href="mailto:annevk@opera.com">annevk@opera.com</a>></dd>
54: </dl>
1.14 avankest 55:
1.1 avankest 56: <p class="copyright"><a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a>
1.51 avankest 57: © 2007
58: <a href="http://www.w3.org/"><acronym title="World Wide Web Consortium">W3C</acronym></a><sup>®</sup>
59: (<a href="http://www.csail.mit.edu/"><acronym title="Massachusetts Institute of Technology">MIT</acronym></a>,
60: <a href="http://www.ercim.org/"><acronym title="European Research Consortium for Informatics and Mathematics">ERCIM</acronym></a>,
61: <a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C
62: <a href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>,
63: <a href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a>
64: and
65: <a href="http://www.w3.org/Consortium/Legal/copyright-documents">document
66: use</a> rules apply.</p>
1.1 avankest 67: </div>
1.12 avankest 68:
1.1 avankest 69: <hr>
1.12 avankest 70:
1.1 avankest 71: <h2 class="no-num no-toc" id="specabstract">Abstract</h2>
1.10 avankest 72:
1.22 avankest 73: <p>The <code title="">XMLHttpRequest</code> Object specification defines an
74: <abbr title="Application Programming Interface">API</abbr> that provides
75: scripted client functionality for transferring data between a client and a
76: server.</p>
1.12 avankest 77:
1.1 avankest 78: <h2 class="no-num no-toc" id="sotd">Status of this Document</h2>
1.12 avankest 79:
1.1 avankest 80: <p><em>This section describes the status of this document at the time of its
1.36 avankest 81: publication. Other documents may supersede this document. A list of current
82: W3C publications and the latest revision of this technical report can be
83: found in the <a href="http://www.w3.org/TR/">W3C technical reports index</a>
1.117 avankest 84: at http://www.w3.org/TR/.</em></p>
1.36 avankest 85:
1.63 avankest 86: <!-- change back to Last Call -->
1.147 avankest 87: <p>This is the [DATE: 3 August 2002] Working Draft of The
88: <code title="">XMLHttpRequest</code> Object specification. Please send
89: comments to <a href="mailto:public-webapi@w3.org">public-webapi@w3.org</a>
1.47 avankest 90: (<a href="http://lists.w3.org/Archives/Public/public-webapi/">archived</a>)
91: with either <samp>[XHR]</samp> or <samp title="">[XMLHttpRequest]</samp> at
1.63 avankest 92: the start of the subject line<!-- by 2 April 2007-->.</p>
1.51 avankest 93:
1.47 avankest 94: <p>This document is produced by the
95: <a href="http://www.w3.org/2006/webapi/">Web API Working Group</a>, part of
96: the <a href="http://www.w3.org/2006/rwc/Activity">Rich Web Clients
97: Activity</a> in the W3C <a href="http://www.w3.org/Interaction/">Interaction
1.51 avankest 98: Domain</a>. Changes made to this document can be found in the
1.47 avankest 99: <a href="http://dev.w3.org/cvsweb/2006/webapi/XMLHttpRequest/Overview.html">W3C
1.117 avankest 100: public CVS server</a>.</p>
1.12 avankest 101:
1.1 avankest 102: <p>Publication as a Working Draft does not imply endorsement by the W3C
1.36 avankest 103: Membership. This is a draft document and may be updated, replaced or
104: obsoleted by other documents at any time. It is inappropriate to cite this
105: document as other than work in progress.</p>
1.12 avankest 106:
1.1 avankest 107: <p>This document was produced by a group operating under the
1.36 avankest 108: <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/">5 February
1.52 avankest 109: 2004 W3C Patent Policy</a>. W3C maintains a
1.36 avankest 110: <a rel="disclosure" href="http://www.w3.org/2004/01/pp-impl/38482/status">public
111: list of any patent disclosures</a> made in connection with the deliverables
112: of the group; that page also includes instructions for disclosing a patent.
113: An individual who has actual knowledge of a patent which the individual
114: believes contains
115: <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#def-essential">Essential
116: Claim(s)</a> must disclose the information in accordance with
117: <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-Disclosure">section
118: 6 of the W3C Patent Policy</a>.</p>
1.12 avankest 119:
1.1 avankest 120: <h2 class="no-num no-toc" id="toc">Table of Contents</h2>
1.21 avankest 121:
1.1 avankest 122: <!--toc-->
1.12 avankest 123:
1.1 avankest 124: <h2 id="introduction">Introduction</h2>
1.12 avankest 125:
1.1 avankest 126: <p><em>This section is non-normative.</em></p>
1.12 avankest 127:
1.33 avankest 128: <p>The <code>XMLHttpRequest</code> object implements an interface exposed by
129: a scripting engine that allows scripts to perform HTTP client functionality,
1.22 avankest 130: such as submitting form data or loading data from a server.</p>
1.24 avankest 131:
1.1 avankest 132: <p>The name of the object is <code>XMLHttpRequest</code> for compatibility
1.127 avankest 133: with the Web, though each component of this name is potentially misleading.
1.39 avankest 134: First, the object supports any text based format, including XML. Second, it
135: can be used to make requests over both HTTP and HTTPS (some implementations
136: support protocols in addition to HTTP and HTTPS, but that functionality is
137: not covered by this specification). Finally, it supports "requests" in a
138: broad sense of the term as it pertains to HTTP; namely all activity involved
139: with HTTP requests or responses for the defined HTTP methods.</p>
1.12 avankest 140:
1.14 avankest 141: <div class="example">
142: <p>Some simple code to do something with data from an XML document fetched
1.22 avankest 143: over the network:</p>
1.16 avankest 144:
1.58 avankest 145: <pre><code>function test(data) {
1.14 avankest 146: // taking care of data
147: }
148:
149: function handler() {
1.117 avankest 150: if(this.readyState == 4 && this.status == 200) {
1.14 avankest 151: // so far so good
1.117 avankest 152: if(this.responseXML != null && this.responseXML.getElementById('test').firstChild.data)
153: // success!
1.14 avankest 154: test(this.responseXML.getElementById('test').firstChild.data);
155: else
156: test(null);
1.117 avankest 157: } else if (this.readyState == 4 && this.status != 200) {
1.14 avankest 158: // fetched the wrong page or network error...
159: test(null);
160: }
161: }
1.12 avankest 162:
1.14 avankest 163: var client = new XMLHttpRequest();
164: client.onreadystatechange = handler;
165: client.open("GET", "test.xml");
1.58 avankest 166: client.send();</code></pre>
1.16 avankest 167:
1.56 avankest 168: <p>If you just want to log a message to the server:</p>
1.16 avankest 169:
1.58 avankest 170: <pre><code>function log(message) {
1.14 avankest 171: var client = new XMLHttpRequest();
1.56 avankest 172: client.open("POST", "/log");
1.57 avankest 173: client.setRequestHeader("Content-Type", "text/plain;charset=UTF-8");
1.14 avankest 174: client.send(message);
1.58 avankest 175: }</code></pre>
1.16 avankest 176:
1.14 avankest 177: <p>Or if you want to check the status of a document on the server:</p>
1.16 avankest 178:
1.58 avankest 179: <pre><code>function fetchStatus(address) {
1.14 avankest 180: var client = new XMLHttpRequest();
181: client.onreadystatechange = function() {
182: // in case of network errors this might not give reliable results
183: if(this.readyState == 4)
184: returnStatus(this.status);
185: }
186: client.open("HEAD", address);
187: client.send();
1.58 avankest 188: }</code></pre>
1.14 avankest 189: </div>
1.12 avankest 190:
1.153 avankest 191: <h2 id="conformance">Conformance</h2>
1.12 avankest 192:
1.27 avankest 193: <p>Everything in this specification is normative except for diagrams,
194: examples, notes and sections marked non-normative.</p>
1.12 avankest 195:
1.1 avankest 196: <p>The key words <em class="ct">must</em>, <em class="ct">must not</em>,
1.74 avankest 197: <em class="ct">should</em> and <em class="ct">may</em> in this document are
198: to be interpreted as described in RFC 2119.
199: [<cite><span>RFC2119</span></cite>]</p>
1.12 avankest 200:
1.1 avankest 201: <p>This specification defines the following classes of products:</p>
1.12 avankest 202:
1.1 avankest 203: <dl>
1.74 avankest 204: <dt><dfn id="conforming-user-agent">Conforming user agent</dfn></dt>
1.24 avankest 205:
1.74 avankest 206: <dd>
207: <p>A user agent <em class="ct">must</em> behave as described in this
1.106 avankest 208: specification in order to be considered conformant.</p>
1.95 avankest 209:
1.140 avankest 210: <p>If the user agent is not a conforming XML user agent the <span>XML
211: response entity body</span> <em class="ct">must</em> (always) be
212: <code>null</code>.</p>
213:
214: <p>User agents <em class="ct">may</em> implement algorithms given in
215: this specification in any way desired, so long as the end result is
216: indistinguishable from the result that would be obtained by the
217: specification's algorithms.</p>
1.110 avankest 218:
1.95 avankest 219: <p class="note">This specification uses both the terms "conforming user
220: agent(s)" and "user agent(s)" to refer to this product class.</p>
1.74 avankest 221: </dd>
1.110 avankest 222:
1.94 avankest 223: <dt><dfn id="conforming-xml-user-agent">Conforming XML user agent</dfn></dt>
1.110 avankest 224:
1.163 avankest 225: <dd><p>An XML user agent <em class="ct">must</em> be a <span>conforming
226: user agent</span> and <em class="ct">must</em> be a conforming XML
227: processor that reports violations of namespace well-formedness.
228: [<cite><span>XML</span></cite>]
1.140 avankest 229: [<cite><span>XMLNS</span></cite>]</p></dd>
1.1 avankest 230: </dl>
1.32 avankest 231:
1.153 avankest 232: <h3 id="dependencies">Dependencies</h3>
1.33 avankest 233:
1.29 avankest 234: <p>This specification relies on several underlying specifications.</p>
235: <dl>
236: <dt>DOM</dt>
1.33 avankest 237:
1.155 avankest 238: <dd><p>A <span title="conforming user agent">conforming user agent</span>
239: <em class="ct">must</em> support some subset of the functionality
240: defined in DOM Events and DOM Core that this specification relies upon.
241: [<cite><span>DOM2Events</span></cite>]
242: [<cite><span>DOM3Core</span></cite>]</p></dd>
1.29 avankest 243:
1.161 avankest 244: <dt>HTML 5</dt>
245:
246: <dd>
247: <p>This specification depends on HTML 5 for defining the
248: <code>Window</code> object and finding the character encoding of a
249: <code>text/html</code> resource. A <span>conforming user agent</span>
250: <em class="ct">must</em> support these features.
251: [<cite><span>HTML5</span></cite>]</p>
252:
253: <p class="note">The
254: <a href="http://www.w3.org/TR/2006/WD-Window-20060407/">Window Object
255: 1.0</a> draft is not referenced normatively as it appears to be no
256: longer maintained and HTML 5 defines the <code>Window</code> object
257: in more detail. This specification already depends on HTML 5 for
258: other reasons so there is not much additional overhead because of
259: this.</p>
260:
1.29 avankest 261: <dt>HTTP</dt>
1.33 avankest 262:
1.29 avankest 263: <dd>
1.155 avankest 264: <p>A <span>conforming user agent</span>
1.126 avankest 265: <em class="ct">must</em> support some version of the HTTP protocol. It
266: <em class="ct">should</em> support any HTTP method that matches the
1.149 avankest 267: <span><code>Method</code> production</span> and <em class="ct">must</em>
268: at least support the following methods:</p>
1.58 avankest 269:
270: <ul>
271: <li><code>GET</code></li>
272: <li><code>POST</code></li>
273: <li><code>HEAD</code></li>
274: <li><code>PUT</code></li>
275: <li><code>DELETE</code></li>
276: <li><code>OPTIONS</code></li>
277: </ul>
1.135 avankest 278:
1.58 avankest 279: <p>Other requirements regarding HTTP are made throughout the
1.39 avankest 280: specification. [<cite><span>RFC2616</span></cite>]</p>
1.29 avankest 281: </dd>
282: </dl>
1.12 avankest 283:
1.157 avankest 284:
1.153 avankest 285: <h3 id="terminology">Terminology</h3>
1.12 avankest 286:
1.80 avankest 287: <p>There is a <dfn id="case-insensitive-match">case-insensitive match</dfn>
1.153 avankest 288: of strings <var>s1</var> and <var>s2</var> if after mapping the ASCII
289: character range A-Z to the range a-z both strings are identical.</p>
1.144 avankest 290:
1.141 avankest 291: <p>Two URIs are <dfn id="same-origin">same-origin</dfn> if after
292: performing scheme-based normalization on both URIs as described in section
1.143 avankest 293: 5.3.3 of RFC 3987 the scheme, ihost and port components are
1.153 avankest 294: identical. If either URI does not have an ihost component the URIs
1.148 avankest 295: <em class="ct">must not</em> be considered same-origin.
1.147 avankest 296: [<cite><span>RFC3987</span></cite>]</p>
1.155 avankest 297:
1.157 avankest 298: <p>The terms <dfn id="origin">origin</dfn> and
299: <dfn id="event-handler-attribute">event handler DOM attribute</dfn> are
300: defined by the HTML 5 specification.
301: [<cite><span>HTML5</span></cite>]</p>
1.155 avankest 302:
1.80 avankest 303:
1.153 avankest 304: <h3 id="extensibility">Extensibility</h3>
1.12 avankest 305:
1.81 avankest 306: <p>Extensions of the API defined by this specification are <em>strongly
1.22 avankest 307: discouraged</em>. User agents, Working Groups and other interested parties
1.33 avankest 308: should discuss extensions on a relevant public forum, preferably
1.22 avankest 309: <a href="mailto:public-webapi@w3.org">public-webapi@w3.org</a>.</p>
1.12 avankest 310:
1.153 avankest 311:
1.157 avankest 312:
1.153 avankest 313: <h2 id="security">Security Considerations</h2>
314:
1.154 avankest 315: <p>Apart from requirements affecting security made throughout this
316: specification implementations <em class="ct">may</em>, at their
1.158 avankest 317: discretion, not expose certain headers, such as HttpOnly cookies.</p>
1.153 avankest 318:
319:
1.157 avankest 320:
1.153 avankest 321: <h2 id="xmlhttprequest">The <code title="">XMLHttpRequest</code>
322: Object</h2>
1.12 avankest 323:
1.58 avankest 324: <p>The <code>XMLHttpRequest</code> object can be used by scripts to
1.22 avankest 325: programmatically connect to their originating server via HTTP.</p>
1.12 avankest 326:
1.1 avankest 327: <p>Objects implementing the <code>XMLHttpRequest</code> interface
1.22 avankest 328: <em class="ct">must</em> also implement the <code>EventTarget</code>
1.155 avankest 329: interface. [<cite><span>DOM2Events</span></cite>]</p>
1.12 avankest 330:
1.58 avankest 331: <p>Objects implementing the <code title="">Window</code> interface
332: <em class="ct">must</em> provide an <code title="">XMLHttpRequest()</code>
1.155 avankest 333: constructor. [<cite><span>HTML5</span></cite>]</p>
1.12 avankest 334:
1.1 avankest 335: <div class="example">
1.58 avankest 336: <p>In ECMAScript this can be used as follows:</p>
337:
338: <pre><code>var client = new XMLHttpRequest();</code></pre>
1.1 avankest 339: </div>
1.12 avankest 340:
1.150 avankest 341: <p>When the <code title="">XMLHttpRequest()</code> constructor is invoked
1.157 avankest 342: a persistent pointer to the associated <code title="">Document</code>
343: object is stored on the newly created object. This is the
344: <dfn title="Document pointer" id="document-pointer"><code>Document</code>
345: pointer</dfn>. The associated <code>Document</code> object is the one
346: returned by the <code>document</code> attribute from the object on which
347: the <code title="">XMLHttpRequest()</code> constructor was invoked (a
348: <code>Window</code> object). The pointer can become "null" if the
349: object is destroyed.</p>
350:
351: <p class="note">As per the conformance criteria implementations are free
352: to implement this in any way they desire as long as the end results are
353: identical to those given by the English prose.</p>
1.27 avankest 354:
1.58 avankest 355: <div class="example">
1.157 avankest 356: <p>If <var><code>iframe</code></var> is a <code title="">Window</code>
357: object <var><code>client</code></var> will have a pointer to
358: <var><code>iframe.document</code></var> in the following example:</p>
1.58 avankest 359:
1.157 avankest 360: <pre><code>var client = new iframe.XMLHttpRequest()</code></pre>
1.58 avankest 361: </div>
1.12 avankest 362:
1.58 avankest 363: <pre class="idl">interface <dfn id="xmlhttprequest-object">XMLHttpRequest</dfn> {
364: // event handler
1.70 avankest 365: attribute EventListener <span>onreadystatechange</span>;
1.58 avankest 366:
367: // state
1.71 avankest 368: const unsigned short <span title="UNSENT state">UNSENT</span> = 0;
1.134 avankest 369: const unsigned short <span title="OPENED state">OPENED</span> = 1;
1.123 avankest 370: const unsigned short <span title="HEADERS_RECEIVED state">HEADERS_RECEIVED</span> = 2;
1.86 avankest 371: const unsigned short <span title="LOADING state">LOADING</span> = 3;
1.117 avankest 372: const unsigned short <span title="DONE state">DONE</span> = 4;
1.70 avankest 373: readonly attribute unsigned short <span>readyState</span>;
1.58 avankest 374:
375: // request
1.70 avankest 376: void <span>open</span>(in DOMString <var>method</var>, in DOMString <var>url</var>);
377: void <span>open</span>(in DOMString <var>method</var>, in DOMString <var>url</var>, in boolean <var>async</var>);
378: void <span>open</span>(in DOMString <var>method</var>, in DOMString <var>url</var>, in boolean <var>async</var>, in DOMString <var>user</var>);
379: void <span>open</span>(in DOMString <var>method</var>, in DOMString <var>url</var>, in boolean <var>async</var>, in DOMString <var>user</var>, in DOMString <var>password</var>);
380: void <span>setRequestHeader</span>(in DOMString <var>header</var>, in DOMString <var>value</var>);
381: void <span>send</span>();
382: void <span>send</span>(in DOMString <var>data</var>);
383: void <span>send</span>(in Document <var>data</var>);
384: void <span>abort</span>();
1.58 avankest 385:
386: // response
1.70 avankest 387: DOMString <span>getAllResponseHeaders</span>();
388: DOMString <span>getResponseHeader</span>(in DOMString <var>header</var>);
389: readonly attribute DOMString <span>responseText</span>;
390: readonly attribute Document <span>responseXML</span>;
391: readonly attribute unsigned short <span>status</span>;
392: readonly attribute DOMString <span>statusText</span>;
1.1 avankest 393: };</pre>
1.8 avankest 394:
1.58 avankest 395: <p>The <code>XMLHttpRequest</code> object can be in five states:
1.71 avankest 396: <span title="UNSENT state">UNSENT</span>,
1.134 avankest 397: <span title="OPENED state">OPENED</span>,
1.123 avankest 398: <span title="HEADERS_RECEIVED state">HEADERS_RECEIVED</span>,
1.86 avankest 399: <span title="LOADING state">LOADING</span> and
1.79 avankest 400: <span title="DONE state">DONE</span>. The current state is exposed through
401: the <code>readyState</code> attribute. The method definitions below define
402: when a state transition takes place.</p>
1.58 avankest 403:
404: <p>When constructed, the <code>XMLHttpRequest</code> object
1.71 avankest 405: <em class="ct">must</em> be in the UNSENT state. This state is represented
1.134 avankest 406: by the <dfn id="unsent-state" title="UNSENT state"><code>UNSENT</code></dfn>
1.58 avankest 407: constant, whose value is <code>0</code>.</p>
408:
1.134 avankest 409: <p>The OPENED state is the state of the object when the <code>open()</code>
1.92 avankest 410: method has been successfully invoked. During this state request headers can
1.58 avankest 411: be set using <code>setRequestHeader()</code> and the request can be made
412: using <code>send()</code>. This state is represented by the
1.134 avankest 413: <dfn id="opened-state" title="OPENED state"><code>OPENED</code></dfn> constant,
1.131 avankest 414: whose value is <code>1</code>.</p>
1.58 avankest 415:
1.134 avankest 416: <p>The OPENED state has an associated <dfn id="send-flag"><code>send()</code>
1.104 avankest 417: flag</dfn> which can be either "true" or "false". The initial value of the
418: <code title="">send()</code> flag is "false".</p>
1.87 avankest 419:
1.123 avankest 420: <p>The HEADERS_RECEIVED state is the state of the object when all response
421: headers have been received. This state is represented by the
1.131 avankest 422: <dfn id="headers-received-state" title="HEADERS_RECEIVED state"><code>HEADERS_RECEIVED</code></dfn>
1.123 avankest 423: constant, whose value is <code>2</code>.</p>
424:
425: <p>The LOADING state is the state of the object when the response entity body
426: is being received. This state is represented by the
1.131 avankest 427: <dfn id="loading-state" title="LOADING state"><code>LOADING</code></dfn> constant,
1.86 avankest 428: whose value is <code>3</code>.</p>
1.58 avankest 429:
1.79 avankest 430: <p>The DONE state is the state of the object when either the data transfer
1.58 avankest 431: has been completed or something went wrong during the transfer (infinite
432: redirects for instance). This state is represented by the
1.131 avankest 433: <dfn id="done-state" title="DONE state"><code>DONE</code></dfn> constant,
434: whose value is <code>4</code>.</p>
1.90 avankest 435:
1.124 avankest 436: <p>The DONE state has an associated <dfn id="error-flag">error flag</dfn>
437: which can be either "true" or "false". The initial value of the error flag is
438: "false".</p>
439:
1.88 avankest 440: <p>The <dfn id="response-entity-body">response entity body</dfn> is the
441: fragment of the <span>entity body</span> received so far (LOADING state) or
442: the complete entity body (DONE state). If there is no entity body the
443: response entity body is "null".</p>
444:
445: <p>The <dfn id="text-response-entity-body">text response entity body</dfn>
1.169 ! avankest 446: is a <code>DOMString</code> representing the <span>response entity
! 447: body</span>. The text response entity body is the return value of the
! 448: following algorithm:</p>
1.90 avankest 449:
1.88 avankest 450: <ol>
1.167 avankest 451: <li><p>If the response entity body is "null" return the empty string and
1.107 avankest 452: terminate these steps.</p>
1.90 avankest 453:
1.113 avankest 454: <li><p>Let <var>charset</var> be "null".</p></li>
1.90 avankest 455:
456: <li><p>If there is no <code>Content-Type</code> header or there is a
457: <code>Content-Type</code> header which contains a MIME type that is
1.116 avankest 458: <code>text/xml</code>, <code>application/xml</code> or ends in
1.167 avankest 459: <code title="">+xml</code> (ignoring any parameters) use the rules set
460: forth in the XML specifications to determine the character encoding. Let
1.116 avankest 461: <var>charset</var> be the determined character encoding.</p></li>
1.90 avankest 462:
1.145 avankest 463: <li><p>If there is a <code>Content-Type</code> header which contains a
464: <code>text/html</code> MIME type follow the rules set forth in the
465: HTML 5 specification to determine the character encoding. Let
466: <var>charset</var> be the determined character encoding.
467: [<cite><span>HTML5</span></cite>]</p></li>
1.118 avankest 468:
1.115 avankest 469: <li>
1.140 avankest 470: <p>If the MIME type specified by the <code>Content-Type</code> header
471: contains a <code>charset</code> parameter and <var>charset</var> is
472: "null" let <var>charset</var> be the value of that parameter.</p>
1.118 avankest 473:
1.145 avankest 474: <p class="note">The algorithms described by the XML and HTML
475: specifications already take <code>Content-Type</code> into account.</p>
1.115 avankest 476: </li>
1.118 avankest 477:
1.111 avankest 478: <li>
479: <!-- This stuff is copied from HTML5. Thanks Hixie! -->
1.113 avankest 480: <p>If <var>charset</var> is "null" then, for each of the rows in the
1.127 avankest 481: following table, starting with the first one and going down, if the first
482: bytes of <var>bytes</var> match the bytes given in the first column, then
483: let <var>charset</var> be the encoding given in the cell in the second
484: column of that row. If there is no match <var>charset</var> remains
485: "null".</p>
1.117 avankest 486:
487: <table>
488: <thead>
489: <tr>
1.111 avankest 490: <th>Bytes in Hexadecimal
491: <th>Description
1.117 avankest 492: <tbody>
493: <tr>
1.111 avankest 494: <td>00 00 FE FF
1.117 avankest 495: <td>UTF-32BE BOM
496: <tr>
497: <td>FF FE 00 00
498: <td>UTF-32LE BOM
499: <tr>
500: <td>FE FF
501: <td>UTF-16BE BOM
502: <tr>
503: <td>FF FE
504: <td>UTF-16LE BOM
505: <tr>
506: <td>EF BB BF
507: <td>UTF-8 BOM<!-- nobody uses this
508: <tr>
509: <td>DD 73 66 73
510: <td>UTF-EBCDIC
511: -->
512: </table>
1.111 avankest 513: </li>
514:
1.113 avankest 515: <li><p>If <var>charset</var> is "null" let <var>charset</var> be
516: UTF-8.</p></li>
517:
1.107 avankest 518: <li><p>Return the result of decoding the response entity body using
1.167 avankest 519: <var>charset</var>. Replace bytes or sequences of bytes that are not
520: valid accordng to the <var>charset</var> with a single U+FFFD
521: character.</p></li>
1.88 avankest 522: </ol>
1.90 avankest 523:
1.163 avankest 524: <p class="note">Authors are encouraged to simply encode their resources
525: using UTF-8.</p>
526:
1.88 avankest 527: <p>The <dfn id="xml-response-entity-body">XML response entity body</dfn> is
1.107 avankest 528: either a <code>Document</code> representing the <span>response entity
1.126 avankest 529: body</span> or <code>null</code>. The XML response entity body is the return
530: value of the following algorithm:</p>
1.90 avankest 531:
1.88 avankest 532: <ol>
1.107 avankest 533: <li><p>If the response entity body is "null" terminate these steps and
534: return <code>null</code>.</p></li>
1.88 avankest 535:
1.103 avankest 536: <li><p>If a <code>Content-Type</code> is present and it does not contain a
537: MIME type (ignoring any parameters) that is <code>text/xml</code>,
1.116 avankest 538: <code>application/xml</code> or ends in <code title="">+xml</code> terminate
539: these steps and return <code>null</code>. (Do not terminate these steps if
540: there is no <code>Content-Type</code> header at all.)</p></li>
1.88 avankest 541:
1.128 avankest 542: <li>
543: <p>Parse the response entity body into a document tree following the
544: rules from the XML specifications. Let the result be <var>parsed
545: document</var>. If this fails (unsupported character encoding, namespace
546: well-formedness error et cetera) terminate these steps return
547: <code>null</code>. [<cite><span>XML</span></cite>]
548: [<cite><span>XMLNS</span></cite>]</p>
1.167 avankest 549:
550: <p class="note">Scripts in the resulting document tree will not be
551: executed, resources referenced will not be loaded and no associated XSLT
552: will be applied.</p>
1.128 avankest 553: </li>
1.88 avankest 554:
1.96 avankest 555: <li><p>Return an object implementing the <code>Document</code>
1.88 avankest 556: interface representing the <var>parsed document</var>.</p></li>
557: </ol>
1.58 avankest 558:
1.5 avankest 559: <dl>
1.131 avankest 560: <dt><dfn id="onreadystatechange"><code>onreadystatechange</code></dfn>
1.39 avankest 561: of type <code>EventListener</code></dt>
1.12 avankest 562:
1.157 avankest 563: <dd><p>This attribute is an <span>event handler DOM attribute</span> and
564: <em class="ct">must</em> be invoked whenever a
565: <code>readystatechange</code> event is targated at the object.</p></dd>
1.12 avankest 566:
1.131 avankest 567: <dt><dfn id="readystate"><code>readyState</code></dfn> of type
1.22 avankest 568: <code>unsigned short</code>, readonly</dt>
1.12 avankest 569:
1.150 avankest 570: <dd><p>On getting the attribute <em class="ct">must</em> return the value
571: of the constant corresponding to the object's current state.</p></dd>
1.12 avankest 572:
1.131 avankest 573: <dt><dfn id="open" title="open"><code>open(<var>method</var>,
1.22 avankest 574: <var>url</var>, <var>async</var>, <var>user</var>,
575: <var>password</var>)</code></dfn>, method</dt>
1.12 avankest 576:
1.1 avankest 577: <dd>
1.58 avankest 578: <p>When invoked, the user agent <em class="ct">must</em> follow the
1.96 avankest 579: following steps (unless otherwise indicated):</p>
1.58 avankest 580:
581: <ol>
1.156 avankest 582: <li><p>Let <var>stored method</var> be the <var>method</var>
583: argument.</p></li>
1.58 avankest 584:
1.156 avankest 585: <li><p>If <var>stored method</var> does not match the
586: <dfn><code>Method</code> production</dfn>, defined in section 5.1.1 of
587: RFC 2616, raise a <code>SYNTAX_ERR</code> exception and terminate these
588: steps. [<cite><span>RFC2616</span></cite>]</p></li>
1.58 avankest 589:
1.156 avankest 590: <li><p>If <var>stored method</var>
591: <span title="case-insensitive match">case-insensitively matches</span>
592: <code>CONNECT</code>, <code>DELETE</code>, <code>GET</code>,
593: <code>HEAD</code>, <code>OPTIONS</code> <code>POST</code>,
594: <code>PUT</code>, <code>TRACE</code>, or <code>TRACK</code> let
595: <var>stored method</var> be the canonical uppercase form of the matched
596: method name.</p></li>
597: <!-- WebKit (and supposedly Firefox) also uppercase: COPY, INDEX, LOCK,
598: M-POST, MKCOL, MOVE, PROPFIND, PROPPATCH, and UNLOCK. -->
1.58 avankest 599:
1.156 avankest 600: <li><p>If <var>stored method</var> is one of <code>CONNECT</code>,
601: <code>TRACE</code>, or <code>TRACK</code> the user agent
602: <em class="ct">should</em> raise a <code>SECURITY_ERR</code> exception
603: and terminate these steps.</p></li>
1.58 avankest 604:
605: <li><p>Drop the fragment identifier (if any) from <var>url</var> and let
606: <var>stored url</var> be the result of that operation.</p></li>
607:
1.96 avankest 608: <li><p>If <var>stored url</var> is a relative reference resolve it using
609: the current value of the <code>baseURI</code> attribute of the
1.157 avankest 610: <span><code>Document</code> pointer</span>. If this fails raise a
1.98 avankest 611: <code>SYNTAX_ERR</code> exception and terminate these steps.</p></li>
1.58 avankest 612:
1.101 avankest 613: <li><p>If <var>stored url</var> contains an unsupported scheme raise a
614: <code>NOT_SUPPORTED_ERR</code> and terminate these steps.</p></li>
1.110 avankest 615:
1.58 avankest 616: <li><p>If the <code>"user:password"</code> format in the
1.141 avankest 617: <code>userinfo</code> production defined in section 3.2.1 of RFC 3986
618: is not supported for the relevant scheme and <var>stored url</var>
619: contains this format raise a <code>SYNTAX_ERR</code> and terminate
620: these steps. [<cite><span>RFC3986</span></cite>]</p></li>
1.58 avankest 621:
622: <li><p>If <var>stored url</var> contains the <code>"user:password"</code>
623: format let <var>stored user</var> be the user part and <var>stored
624: password</var> be the password part.</p></li>
625:
626: <li><p>If <var>stored url</var> just contains the <code>"user"</code>
627: format let <var>stored user</var> be the user part.</p></li>
628:
1.151 avankest 629: <li><p>If <var>stored url</var> is not of the <span>same-origin</span>
1.157 avankest 630: as the <span>origin</span> of the <span><code>Document</code>
631: pointer</span> the user agent <em class="ct">should</em> raise a
632: <code>SECURITY_ERR</code> exception and terminate these steps.</p></li>
1.58 avankest 633:
1.145 avankest 634: <li><p>Let <var>async</var> be the value of the <var>async</var>
635: argument or <code>true</code> if it was omitted.</p></li>
1.58 avankest 636:
1.126 avankest 637: <li><p>If the <var>user</var> argument was not omitted, and its syntax
1.145 avankest 638: does not match that specified by the relevant authentication scheme,
639: raise a <code>SYNTAX_ERR</code> exception and terminate these
640: steps.</p></li>
1.14 avankest 641:
1.58 avankest 642: <li>
643: <p>If the <var>user</var> argument was not omitted and is not
1.145 avankest 644: <code>null</code> let <var>stored user</var> be <var>user</var>
645: encoded using the encoding specified in the relevant authentication
646: scheme or UTF-8 if the scheme fails to specify an encoding.</p>
1.14 avankest 647:
1.58 avankest 648: <p class="note">This step overrides any user that may have been set by
649: the <var>url</var> argument.</p>
650: </li>
1.16 avankest 651:
1.58 avankest 652: <li><p>If the <var>user</var> argument was not omitted and is
653: <code>null</code> remove <var>stored user</var>.</p></li>
1.14 avankest 654:
1.145 avankest 655: <li><p>If the <var>password</var> argument was not omitted and its
656: syntax does not match that specified by the relevant authentication
657: scheme raise a <code>SYNTAX_ERR</code> exception and terminate these
658: steps.</p></li>
1.58 avankest 659:
660: <li><p>If the <var>password</var> argument was not omitted and is not
661: <code>null</code> let <var>stored password</var> be <var>password</var>
662: encoded using the encoding specified in the relevant authentication
663: scheme or UTF-8 if the scheme fails to specify an encoding.</p></li>
664:
665: <li><p>If the <var>password</var> argument was not omitted and is
666: <code>null</code> remove <var>stored password</var>.</p></li>
667:
1.108 avankest 668: <li><p><span title="abort send()">Abort the <code>send()</code>
669: algorithm</span>, set <span>response entity body</span> to "null" and
670: reset the list of request headers.<p></li>
1.58 avankest 671:
1.108 avankest 672: <li><p>The user agent <em class="ct">should</em> cancel any network
673: activity for which the object is responsible.</p></li>
1.58 avankest 674: <!-- we can hardly require it... -->
675:
1.145 avankest 676: <li><p>Switch the object to the
677: <span title="OPENED state">OPENED</span> state, set the
678: <span><code>send()</code> flag</span> to "false" and then synchronously
679: dispatch a <code>readystatechange</code> event on the object and return
680: the method call.</p></li>
1.58 avankest 681: </ol>
1.14 avankest 682:
1.19 avankest 683: <p class="note">A future version or extension of this specification will
1.33 avankest 684: most likely define a way of doing cross-site requests.</p>
1.1 avankest 685: </dd>
1.12 avankest 686:
1.131 avankest 687: <dt><dfn id="setrequestheader" title="setrequestheader"><code>setRequestHeader(<var>header</var>,
1.22 avankest 688: <var>value</var>)</code></dfn>, method</dt>
1.12 avankest 689:
1.5 avankest 690: <dd>
1.163 avankest 691: <p>Each request has a list of request headers with associated values.
692: The <code>setRequestHeader()</code> method can be used to manipulate
693: those values and set new request headers.</p>
694:
695: <p class="note">The <code>setRequestHeader()</code> method appends a
696: value if the HTTP header given as argument is already part of the list
697: of request headers.</p>
1.45 avankest 698:
1.58 avankest 699: <p>When invoked, the user agent <em class="ct">must</em> follow the
1.96 avankest 700: following steps (unless otherwise indicated):</p>
1.14 avankest 701:
1.58 avankest 702: <ol>
703: <li><p>If the state of the object is not
1.134 avankest 704: <span title="OPENED state">OPENED</span> raise an
1.98 avankest 705: <code>INVALID_STATE_ERR</code> exception and terminate these
706: steps.</p></li>
1.96 avankest 707:
708: <li><p>If the <span><code>send()</code> flag</span> is "true" raise an
1.98 avankest 709: <code>INVALID_STATE_ERR</code> exception and terminate these
710: steps.</p></li>
1.14 avankest 711:
1.97 avankest 712: <li><p>If the <var>header</var> argument does not match the
1.22 avankest 713: <dfn><code>field-name</code> production</dfn> as defined by section 4.2
1.96 avankest 714: of RFC 2616 or is <code>null</code> raise a <code>SYNTAX_ERR</code>
1.98 avankest 715: exception and terminate these steps.
1.96 avankest 716: [<cite><span>RFC2616</span></cite>]</p></li>
717:
1.98 avankest 718: <li><p>If the <var>value</var> argument is <code>null</code> terminate
719: these steps. (Do not raise an exception.)</li>
1.70 avankest 720: <!-- undefined is to be treated as null here... -->
1.79 avankest 721:
1.97 avankest 722: <li><p>If the <var>value</var> argument does not match the
1.22 avankest 723: <dfn><code>field-value</code> production</dfn> as defined by section 4.2
1.98 avankest 724: of RFC 2616 raise a <code>SYNTAX_ERR</code> and terminate these steps.
1.58 avankest 725: [<cite><span>RFC2616</span></cite>]</p></li>
1.14 avankest 726:
1.32 avankest 727: <li>
1.132 avankest 728: <p>For security reasons, these steps <em class="ct">should</em> be
1.98 avankest 729: terminated if the <var>header</var> argument
1.80 avankest 730: <span title="case-insensitive match">case-insensitively matches</span>
731: one of the following headers:</p>
1.58 avankest 732:
1.32 avankest 733: <ul>
734: <li><code>Accept-Charset</code></li>
735: <li><code>Accept-Encoding</code></li>
1.68 avankest 736: <li><code>Connection</code></li>
1.32 avankest 737: <li><code>Content-Length</code></li>
1.68 avankest 738: <li><code>Content-Transfer-Encoding</code></li>
739: <li><code>Date</code></li>
1.32 avankest 740: <li><code>Expect</code></li>
741: <li><code>Host</code></li>
742: <li><code>Keep-Alive</code></li>
743: <li><code>Referer</code></li>
744: <li><code>TE</code></li>
745: <li><code>Trailer</code></li>
746: <li><code>Transfer-Encoding</code></li>
747: <li><code>Upgrade</code></li>
1.68 avankest 748: <li><code>Via</code></li>
1.32 avankest 749: </ul>
750: </li>
1.132 avankest 751:
1.168 avankest 752: <li><p>Also for security reasons, these steps
753: <em class="ct">should</em> be terminated if the start of the
754: <var>header</var> argument
755: <span title="case-insensitive match">case-insensitively matches</span>
756: <code>Proxy-</code> or <code>Sec-</code>.</p></li>
1.5 avankest 757:
1.58 avankest 758: <li><p>If the <var>header</var> argument is not in the list of request
1.96 avankest 759: headers append the <var>header</var> with its associated <var>value</var>
1.98 avankest 760: to the list and terminate these steps.</p></li>
1.58 avankest 761:
762: <li><p>If the <var>header</var> argument is in the list of request
1.96 avankest 763: headers either use multiple headers, combine the values or use a
764: combination of those (section 4.2, RFC 2616).
765: [<cite><span>RFC2616</span></cite>]</p></li>
766: <!-- XXX it seems UAs always combine the values -->
1.58 avankest 767: </ol>
1.45 avankest 768:
769: <p class="note">See also the <code>send()</code> method regarding user
1.71 avankest 770: agent header handling for caching, authentication, proxies, and
771: cookies.</p>
1.14 avankest 772:
773: <div class="example">
1.58 avankest 774: <pre><code>// The following script:
1.14 avankest 775: var client = new XMLHttpRequest();
776: client.open('GET', 'demo.cgi');
777: client.setRequestHeader('X-Test', 'one');
778: client.setRequestHeader('X-Test', 'two');
779: client.send();
780:
781: // ...would result in the following header being sent:
782: ...
783: X-Test: one, two
1.58 avankest 784: ...</code></pre>
1.14 avankest 785: </div>
1.5 avankest 786: </dd>
1.12 avankest 787:
1.131 avankest 788: <dt><dfn id="send" title="send"><code>send(<var>data</var>)</code></dfn>,
1.22 avankest 789: method</dt>
1.12 avankest 790:
1.17 avankest 791: <dd>
1.58 avankest 792: <p>The <code>send()</code> method initiates the request and its optional
1.163 avankest 793: argument provides the <span>entity body</span>.</p>
794:
795: <p class="note">Authors are encouraged to ensure that they have
796: specified the <code>Content-Type</code> header via
797: <code>setRequestHeader()</code> before invoking <code>send()</code> with
798: a non-<code>null</code> <var>data</var> argument.</p>
1.58 avankest 799:
800: <p>When invoked, the user agent <em class="ct">must</em> follow the
1.108 avankest 801: following steps (unless otherwise noted). Note that this algorithm might
1.126 avankest 802: get aborted if the <code>open()</code> or <code>abort()</code> method is
803: invoked. When the
1.109 avankest 804: <dfn title="abort send()" id="abort-send-algorithm"><code>send()</code>
1.110 avankest 805: algorithm is aborted</dfn> the user agent <em class="ct">must</em>
806: terminate the algorithm after finishing the step it is on.</p>
807:
1.108 avankest 808: <p class="note">The following algorithm can not be aborted through script
809: when <var>async</var> is <code>false</code>. It can only be aborted when
810: <var>async</var> is <code>true</code> and only after the method call has
811: returned.</p>
1.58 avankest 812:
813: <ol>
814: <li><p>If the state of the object is not
1.134 avankest 815: <span title="OPENED state">OPENED</span> raise an
1.98 avankest 816: <code>INVALID_STATE_ERR</code> exception and terminate these
817: steps.</p></li>
1.96 avankest 818:
819: <li><p>If the <span><code>send()</code> flag</span> is "true" raise an
1.98 avankest 820: <code>INVALID_STATE_ERR</code> exception and terminate these
821: steps.</p></li>
1.58 avankest 822:
1.102 avankest 823: <li><p>If <var>async</var> is <code>true</code> set the
1.103 avankest 824: <span><code>send()</code> flag</span> to "true".</p></li>
825:
1.58 avankest 826: <li>
1.166 avankest 827: <p>If <var>stored method</var> is <code>GET</code> act as if the
828: <var>data</var> argument is <code>null</code>.</p>
829:
1.58 avankest 830: <p>If the <var>data</var> argument has not been omitted and is not
1.145 avankest 831: <code>null</code> use it for the <dfn id="entity-body">entity
832: body</dfn> as defined by section 7.2 of RFC 2616 observing the
833: following rules: [<cite><span>RFC2616</span></cite>]</p>
1.58 avankest 834:
1.119 avankest 835: <dl class="switch">
1.58 avankest 836: <dt><var>data</var> is a <code>DOMString</code></dt>
837:
1.163 avankest 838: <dd>
839: <p>Encode <var>data</var> using UTF-8 for transmission.</p>
840:
1.164 avankest 841: <p>If a <code>Content-Type</code> header is set using
842: <code>setRequestHeader()</code> set the <code>charset</code>
843: parameter of that header to <code>UTF-8</code>.</p>
1.163 avankest 844: </dd>
1.58 avankest 845:
846: <dt><var>data</var> is a <code>Document</code>
847:
848: <dd>
1.165 avankest 849: <p>Serialize <var>data</var> into a namespace well-formed XML
850: document and encoded using the encoding given by
851: <code><var>data</var>.inputEncoding</code>, when not
852: <code>null</code>, or UTF-8 otherwise. Or, if this fails because the
853: <code>Document</code> cannot be serialized act as if <var>data</var>
854: is <code>null</code>.</p>
855:
856: <p>If no <code>Content-Type</code> header has been set using
857: <code>setRequestHeader()</code> append a <code>Content-Type</code>
858: header to the list of request headers with a value of
859: <code>application/xml;charset=<var>charset</var></code> where
860: <var>charset</var> is the encoding used to encode the document.</p>
1.58 avankest 861:
862: <p class="note">Subsequent changes to the <code>Document</code> have
863: no effect on what is submitted.</p>
864: </dd>
865:
866: <dt><var>data</var> is not a <code>DOMString</code> or
867: <code>Document</code></dt>
868:
1.96 avankest 869: <dd><p>Use the stringification mechanisms of the host language on
870: <var>data</var> and treat the result as if <var>data</var> is a
1.166 avankest 871: <code>DOMString</code>. Or, if this fails, act as if the
872: <var>data</var> argument is <code>null</code>.</p></dd>
1.58 avankest 873: </dl>
874:
1.126 avankest 875: <p>If the <var>data</var> argument has been omitted, or is
876: <code>null</code>, no entity body is used in the request.</p>
1.58 avankest 877: </li>
878:
1.71 avankest 879: <li><p>Make a request to <var>stored url</var>, using HTTP method
880: <var>stored method</var>, user <var>stored user</var> (if provided) and
881: password <var>stored password</var> (if provided), taking into account
882: the entity body, list of request headers and the rules listed directly
883: after this set of steps.</p></li>
1.60 avankest 884:
1.67 avankest 885: <li>
1.96 avankest 886: <p>Synchronously dispatch a <code>readystatechange</code> event on the
887: object.</p>
1.67 avankest 888:
1.96 avankest 889: <p class="note">The state of the object does not change. The event is
890: dispatched for historical reasons.</p>
1.67 avankest 891: </li>
892:
1.102 avankest 893: <li><p>If <var>async</var> is <code>true</code> return the
1.98 avankest 894: <code>send()</code> method call. (Do not terminate the steps in the
895: algorithm though.)</p></li>
1.58 avankest 896:
1.117 avankest 897: <li>
1.123 avankest 898: <p>While downloading the resource the following rules are to be
899: observed.</p>
900:
1.119 avankest 901: <dl class="switch">
1.118 avankest 902: <dt>If the response is an HTTP redirect</dt>
1.167 avankest 903:
1.118 avankest 904: <dd>
1.145 avankest 905: <p>If the redirect does not violate security (it is
906: <span>same-origin</span> for instance) or infinite loop precautions
907: and the scheme is supported transparently follow the redirect and go
1.166 avankest 908: to the start of this step (step 8).</p>
1.145 avankest 909:
910: <p class="note">HTTP places requirements on the user agent regarding
911: the preservation of the request method and entity body during
912: redirects, and also requires users to be notified of certain kinds
913: of automatic redirections.</p>
1.118 avankest 914: <!-- Arguably HTTP should be fixed for the latter case. No browser
915: follows that as far as I know. -->
916:
917: <p>Otherwise, follow the following set of steps:</p>
1.145 avankest 918:
1.118 avankest 919: <ol>
1.124 avankest 920: <li><p>Set the <span>response entity body</span> to "null", the
921: <span>error flag</span> to "true" and reset the list of request
922: headers.</p></li>
1.118 avankest 923:
924: <li><p>Synchronously switch the state to
925: <span title="DONE state">DONE</span>.</p></li>
926:
927: <li><p>If <var>async</var> is set to <code>false</code> raise a
928: <code>NETWORK_ERR</code> exception and terminate the overall
929: algorithm.</p></li>
930:
931: <li><p>Synchronously dispatch a <code>readystatechange</code> event on
932: the object.</p></li>
933:
934: <li><p>Terminate the overall algorithm.</p></li>
935: </ol>
936:
937: <p class="note">It is likely that a future version of the
938: <code>XMLHttpRequest</code> object will dispatch an <code>error</code>
939: event here as well.</p>
940: </dd>
1.117 avankest 941:
1.121 avankest 942:
1.118 avankest 943: <dt>If the user cancels the download</dt>
1.58 avankest 944:
1.118 avankest 945: <dd>
946: <p>Run the following set of steps:</p>
1.60 avankest 947:
1.118 avankest 948: <ol>
1.124 avankest 949: <li><p>Set the <span>response entity body</span> to "null", the
950: <span>error flag</span> to "true" and reset the list of request
951: headers.</p></li>
1.118 avankest 952:
953: <li><p>Synchronously switch the state to
954: <span title="DONE state">DONE</span>.</p></li>
955:
1.121 avankest 956: <li><p>If <var>async</var> is set to <code>false</code> raise an
957: <code>ABORT_ERR</code> exception and terminate the overall
1.118 avankest 958: algorithm.</p></li>
959:
960: <li><p>Synchronously dispatch a <code>readystatechange</code> event on
961: the object.</p></li>
962:
963: <li><p>Terminate the overall algorithm.</p></li>
964: </ol>
1.121 avankest 965:
1.118 avankest 966: <p class="note">It is likely that a future version of the
1.121 avankest 967: <code>XMLHttpRequest</code> object will dispatch an
968: <code title="">abort</code> event here as well.</p>
1.118 avankest 969: </dd>
1.60 avankest 970:
1.121 avankest 971:
1.118 avankest 972: <dt>In case of network errors</dt>
1.60 avankest 973:
1.118 avankest 974: <dd>
1.126 avankest 975: <p>In case of DNS errors, or other type of network errors, run the
976: following set of steps. <span class="note">This does not include HTTP
977: responses that indicate some type of error, such as HTTP status code
978: 410.</span></p>
1.118 avankest 979:
980: <ol>
1.124 avankest 981: <li><p>Set the <span>response entity body</span> to "null", the
982: <span>error flag</span> to "true" and reset the list of request
983: headers.</p></li>
1.118 avankest 984:
985: <li><p>Synchronously switch the state to
986: <span title="DONE state">DONE</span>.</p></li>
987:
988: <li><p>If <var>async</var> is set to <code>false</code> raise a
989: <code>NETWORK_ERR</code> exception and terminate the overall
990: algorithm.</p></li>
991:
992: <li><p>Synchronously dispatch a <code>readystatechange</code> event on
993: the object.</p></li>
994:
995: <li><p>Terminate the overall algorithm.</p></li>
996: </ol>
997:
998: <p class="note">It is likely that a future version of the
999: <code>XMLHttpRequest</code> object will dispatch an <code>error</code>
1000: event here as well.</p>
1001: </dd>
1002:
1003: <dt>Once all HTTP headers have been received</dt>
1004:
1005: <dd>
1006: <p>If all HTTP headers have been received, before receiving the message
1.123 avankest 1007: body (if any), run the following steps:</p>
1.60 avankest 1008:
1.118 avankest 1009: <ol>
1010: <li><p>Synchronously switch the state to
1.123 avankest 1011: <span title="HEADERS_RECEIVED state">HEADERS_RECEIVED</span>.</p></li>
1.118 avankest 1012:
1013: <li><p>Synchronously dispatch a <code>readystatechange</code> event on
1014: the object.</p></li>
1.123 avankest 1015: </ol>
1016: </dd>
1017:
1018: <dt>Once the first byte (or more) of the response entity body has been
1019: received</dt>
1020: <dt>If there is no response entity body</dt>
1.153 avankest 1021:
1.123 avankest 1022: <dd>
1023: <ol>
1.118 avankest 1024: <li><p>Synchronously switch the state to
1025: <span title="LOADING state">LOADING</span>.</p></li>
1026:
1027: <li><p>Synchronously dispatch a <code>readystatechange</code> event on
1028: the object.</p></li>
1029: </ol>
1030: </dd>
1031: </dl>
1.153 avankest 1032:
1.124 avankest 1033: <p>Finally, once the complete resource has been downloaded go to the next
1.118 avankest 1034: step.</p>
1.58 avankest 1035: </li>
1036:
1.82 avankest 1037: <li><p>When the request has successfully completed loading, synchronously
1.96 avankest 1038: switch the state to <span title="DONE state">DONE</span> and then
1039: synchronously dispatch a <code>readystatechange</code> event on the
1040: object and return the method call in case of <var>async</var> being
1041: <code>false</code>.</p></li>
1.58 avankest 1042: </ol>
1.14 avankest 1043:
1.91 avankest 1044: <p>If the user agent allows the user to configure a proxy it
1.22 avankest 1045: <em class="ct">should</em> modify the request appropriately;
1.42 avankest 1046: <abbr title="in other words">i.e.</abbr>, connect to the proxy host
1047: instead of the origin server, modify the <code>Request-Line</code> and
1048: send <code>Proxy-Authorization</code> headers as specified.</p>
1.12 avankest 1049:
1.42 avankest 1050: <p>If the user agent supports HTTP Authentication it
1.22 avankest 1051: <em class="ct">should</em> consider requests originating from this object
1.42 avankest 1052: to be part of the protection space that includes the accessed URIs and
1053: send <code>Authorization</code> headers and handle <code>401
1.137 avankest 1054: Unauthorized</code> requests appropriately. If authentication fails, user
1.42 avankest 1055: agents <em class="ct">should</em> prompt the users for credentials.
1056: [<cite><span>RFC2617</span></cite>]</p>
1057:
1.57 avankest 1058: <p>If the user agent supports HTTP State Management it
1.42 avankest 1059: <em class="ct">should</em> persist, discard and send cookies (as received
1060: in the <code>Set-Cookie</code> and <code>Set-Cookie2</code> response
1061: headers, and sent in the <code>Cookie</code> header) as applicable.
1062: [<cite><span>RFC2965</span></cite>]</p>
1063:
1.163 avankest 1064: <!-- It has been said that RFC2965 does not match reality. -->
1065:
1.42 avankest 1066: <p>If the user agent implements a HTTP cache it <em class="ct">should</em>
1067: respect <code>Cache-Control</code> request headers set by the script
1068: (<abbr title="for example">e.g.</abbr>, <code>Cache-Control:
1069: no-cache</code> bypasses the cache). It <em class="ct">must not</em> send
1070: <code>Cache-Control</code> or <code>Pragma</code> request headers
1.137 avankest 1071: automatically unless the user explicitly requests such behavior
1.42 avankest 1072: (<abbr>e.g.</abbr>, by (force-)reloading the page). <code>304 Not
1.22 avankest 1073: Modified</code> responses that are a result of a user agent generated
1074: conditional request <em class="ct">must</em> be presented as <code>200
1.57 avankest 1075: OK</code> responses with the appropriate content. The user agent
1.39 avankest 1076: <em class="ct">must</em> allow scripts to override automatic cache
1.22 avankest 1077: validation by setting request headers (e.g., <code>If-None-Match</code>,
1.42 avankest 1078: <code>If-Modified-Since</code>), in which case <code>304 Not
1079: Modified</code> responses <em class="ct">must</em> be passed through.
1080: [<cite><span>RFC2616</span></cite>]</p>
1.12 avankest 1081:
1.8 avankest 1082: <p>If the user agent implements server-driven content-negotiation
1.161 avankest 1083: it <em class="ct">should</em> set <code>Accept-Encoding</code> and
1084: <code>Accept-Charset</code> headers as appropriate; it
1.162 avankest 1085: <em class="ct">must not</em> automatically set the <code>Accept</code>.
1086: If the <code>Accept-Language</code> header is not set using
1087: <code>setRequestHeader()</code> user agents <em class="ct">should</em>
1088: provide it. Responses to such requests <em class="ct">must</em> have the
1089: content-encodings automatically decoded.
1090: [<cite><span>RFC2616</span></cite>]</p>
1.8 avankest 1091: </dd>
1.12 avankest 1092:
1.131 avankest 1093: <dt><dfn id="abort"><code>abort()</code></dfn>, method</dt>
1.12 avankest 1094:
1.5 avankest 1095: <dd>
1.60 avankest 1096: <p>When invoked, the user agent <em class="ct">must</em> run the following
1.96 avankest 1097: steps (unless otherwise noted):</p>
1.60 avankest 1098:
1099: <ol>
1.108 avankest 1100: <li><p><span title="abort send()">Abort the <code>send()</code>
1101: algorithm</span>, set the <span>response entity body</span> to "null",
1.135 avankest 1102: the <span>error flag</span> to "true" and remove any registered request
1103: headers.</p></li>
1.60 avankest 1104:
1.108 avankest 1105: <li><p>The user agent <em class="ct">should</em> cancel any network
1106: activity for which the object is responsible.</p></li>
1.60 avankest 1107:
1.83 avankest 1108: <li>
1.85 avankest 1109: <p>If the state is <span title="UNSENT state">UNSENT</span>,
1.134 avankest 1110: <span title="OPENED state">OPENED</span> and the <span><code>send()</code>
1.87 avankest 1111: flag</span> is "false", or <span title="DONE state">DONE</span> go to
1112: the next step.</p>
1.85 avankest 1113:
1.135 avankest 1114: <p>Otherwise, switch the state to
1115: <span title="DONE state">DONE</span>, set the
1116: <span><code>send()</code> flag</span> to "false" and synchronously
1117: dispatch a <code>readystatechange</code> event on the object.</p>
1.83 avankest 1118: </li>
1.67 avankest 1119:
1.60 avankest 1120: <li>
1.97 avankest 1121: <p>Switch the state to <span title="UNSENT state">UNSENT</span>. (Do not
1.71 avankest 1122: dispatch the <code>readystatechange</code> event.)</p>
1.60 avankest 1123:
1.82 avankest 1124: <p class="note">It is likely that a future version of the
1125: <code>XMLHttpRequest</code> object will dispatch an
1126: <code title="">abort</code> event here as well.</p>
1.60 avankest 1127: </li>
1128: </ol>
1.5 avankest 1129: </dd>
1.12 avankest 1130:
1.131 avankest 1131: <dt><dfn id="getallresponseheaders"><code>getAllResponseHeaders()</code></dfn>,
1.22 avankest 1132: method</dt>
1.12 avankest 1133:
1.5 avankest 1134: <dd>
1.60 avankest 1135: <p>When invoked, the user agent <em class="ct">must</em> run
1.58 avankest 1136: the following steps:</p>
1137:
1138: <ol>
1.124 avankest 1139: <li><p>If the state is <span title="UNSENT state">UNSENT</span> or
1.134 avankest 1140: <span title="OPENED state">OPENED</span> raise an
1.98 avankest 1141: <code>INVALID_STATE_ERR</code> exception and terminate these
1142: steps.</p></li>
1.124 avankest 1143:
1144: <li><p>If the <span>error flag</span> is "true" return <code>null</code>
1145: and terminate these steps.</p></li>
1.96 avankest 1146:
1.167 avankest 1147: <li><p>Return all the HTTP headers, as a single string, with each
1148: header line separated by a U+000D (CR) U+000A (LF) pair excluding the
1149: status line.</p></li>
1.58 avankest 1150: </ol>
1.24 avankest 1151:
1.5 avankest 1152: <div class="example">
1.58 avankest 1153: <pre><code>// The following script:
1.5 avankest 1154: var client = new XMLHttpRequest();
1.14 avankest 1155: client.open("GET", "test.txt", true);
1.5 avankest 1156: client.send();
1.12 avankest 1157: client.onreadystatechange = function() {
1.13 avankest 1158: if(this.readyState == 3) {
1.12 avankest 1159: print(this.getAllResponseHeaders());
1160: }
1161: }
1.5 avankest 1162:
1163: // ...should output something similar to the following text:
1164: Date: 2004年10月24日 04:58:38 GMT
1165: Server: Apache/1.3.31 (Unix)
1166: Keep-Alive: timeout=15, max=99
1167: Connection: Keep-Alive
1168: Transfer-Encoding: chunked
1.58 avankest 1169: Content-Type: text/plain; charset=utf-8</code></pre>
1.5 avankest 1170: </div>
1171: </dd>
1.12 avankest 1172:
1.131 avankest 1173: <dt><dfn id="getresponseheader" title="getresponseheader"><code>getResponseHeader(<var>header</var>)</code></dfn>,
1.22 avankest 1174: method</dt>
1.12 avankest 1175:
1.1 avankest 1176: <dd>
1.58 avankest 1177: <p>When the method is invoked, the user agent <em class="ct">must</em> run
1178: the following steps:</p>
1.14 avankest 1179:
1.58 avankest 1180: <ol>
1.124 avankest 1181: <li><p>If the state is <span title="UNSENT state">UNSENT</span> or
1.134 avankest 1182: <span title="OPENED state">OPENED</span> raise an
1.98 avankest 1183: <code>INVALID_STATE_ERR</code> exception and terminate these
1184: steps.</p></li>
1.58 avankest 1185:
1.149 avankest 1186: <li><p>If the <var>header</var> argument does not match the
1187: <span><code>field-name</code> production</span> return the empty string
1.124 avankest 1188: and terminate these steps.</p></li>
1189:
1.149 avankest 1190: <li><p>If the <span>error flag</span> is "true" return
1191: <code>null</code> and terminate these steps.</p></li>
1.58 avankest 1192:
1.80 avankest 1193: <li><p>If the <var>header</var> argument
1194: <span title="case-insensitive match">case-insensitively matches</span>
1.127 avankest 1195: multiple HTTP headers for the last request sent, return the values of
1.149 avankest 1196: these headers as a single concatenated string separated from each
1.167 avankest 1197: other by an U+002C followed by an U+0020 character and terminate
1.149 avankest 1198: these steps.</p></li>
1.58 avankest 1199:
1.80 avankest 1200: <li><p>If the <var>header</var> argument
1.149 avankest 1201: <span title="case-insensitive match">case-insensitively matches</span>
1202: a single HTTP header for the last request sent return the value of
1203: that header and terminate these steps.</p></li>
1.58 avankest 1204:
1.96 avankest 1205: <li><p>Return <code>null</code>.</p></li>
1.58 avankest 1206: </ol>
1.12 avankest 1207:
1.1 avankest 1208: <div class="example">
1.58 avankest 1209: <pre><code>// The following script:
1.1 avankest 1210: var client = new XMLHttpRequest();
1.14 avankest 1211: client.open("GET", "test.txt", true);
1.5 avankest 1212: client.send();
1.12 avankest 1213: client.onreadystatechange = function() {
1.13 avankest 1214: if(this.readyState == 3) {
1.14 avankest 1215: print(client.getResponseHeader("Content-Type"));
1.12 avankest 1216: }
1217: }
1.1 avankest 1218:
1.5 avankest 1219: // ...should output something similar to the following text:
1.163 avankest 1220: text/plain; charset=utf-8</code></pre>
1.1 avankest 1221: </div>
1.5 avankest 1222: </dd>
1.12 avankest 1223:
1.131 avankest 1224: <dt><dfn id="responsetext"><code>responseText</code></dfn> of type
1.22 avankest 1225: <code>DOMString</code>, readonly</dt>
1.12 avankest 1226:
1.5 avankest 1227: <dd>
1.88 avankest 1228: <p>On getting, the user agent <em class="ct">must</em> run the following
1229: steps:</p>
1230:
1231: <ol>
1.169 ! avankest 1232: <li><p>If the state is not <span title="LOADING state">LOADING</span>
! 1233: or <span title="DONE state">DONE</span> return the empty string and
! 1234: terminate these steps.</p></li>
1.12 avankest 1235:
1.88 avankest 1236: <li><p>Return the <span>text response entity body</span>.</p></li>
1237: </ol>
1.5 avankest 1238: </dd>
1.12 avankest 1239:
1.131 avankest 1240: <dt><dfn id="responsexml"><code>responseXML</code></dfn> of type
1.22 avankest 1241: <code>Document</code>, readonly</dt>
1.12 avankest 1242:
1.8 avankest 1243: <dd>
1.75 avankest 1244: <p>On getting, the user agent <em class="ct">must</em> run the following
1245: steps:</p>
1.79 avankest 1246:
1.75 avankest 1247: <ol>
1.169 ! avankest 1248: <li><p>If the state is not <span title="DONE state">DONE</span> return
! 1249: <code>null</code> and terminate these steps.</p></li>
1.75 avankest 1250:
1.88 avankest 1251: <li><p>Return the <span>XML response entity body</span>.</p></li>
1.75 avankest 1252: </ol>
1.5 avankest 1253: </dd>
1.12 avankest 1254:
1.131 avankest 1255: <dt><dfn id="status"><code>status</code></dfn> of type <code>unsigned
1.22 avankest 1256: short</code>, readonly</dt>
1.12 avankest 1257:
1.5 avankest 1258: <dd>
1.72 avankest 1259: <p>On getting, if available, it <em class="ct">must</em> return the HTTP
1260: status code sent by the server (typically <code>200</code> for a
1261: successful request). Otherwise, if not available, the user agent
1262: <em class="ct">must</em> raise an <code>INVALID_STATE_ERR</code>
1263: exception.</p>
1.12 avankest 1264: </dd>
1265:
1.131 avankest 1266: <dt><dfn id="statustext"><code>statusText</code></dfn> of type
1.22 avankest 1267: <code>DOMString</code>, readonly</dt>
1.12 avankest 1268:
1.5 avankest 1269: <dd>
1.72 avankest 1270: <p>On getting, if available, it <em class="ct">must</em> return the HTTP
1271: status text sent by the server (appears after the status code). Otherwise,
1272: if not available, the user agent <em class="ct">must</em> raise an
1273: <code>INVALID_STATE_ERR</code> exception.</p>
1.1 avankest 1274: </dd>
1275: </dl>
1.12 avankest 1276:
1.121 avankest 1277:
1.31 avankest 1278: <h3 id="events">Events for the <code title="">XMLHttpRequest</code>
1279: Object</h3>
1.12 avankest 1280:
1.134 avankest 1281: <p>This section describes the various events that can be dispatched on
1282: objects implementing the <code>XMLHttpRequest</code> interface. For this
1.22 avankest 1283: version of the specification only one event is defined.</p>
1.12 avankest 1284:
1.1 avankest 1285: <dl>
1.131 avankest 1286: <dt><dfn id="readystatechange"><code>readystatechange</code></dfn></dt>
1.24 avankest 1287:
1.72 avankest 1288: <dd>When the user agent dispatches a <code title="">readystatechange</code>
1289: event (as indicated above) it <em class="ct">must not</em> bubble,
1290: <em class="ct">must not</em> be cancelable and <em class="ct">must</em>
1291: implement the <code>Event</code> interface. Its <code>namespaceURI</code>
1292: attribute <em class="ct">must</em> be <code>null</code>.
1.155 avankest 1293: [<cite><span>DOM2Events</span></cite>]</dd>
1.1 avankest 1294: </dl>
1.32 avankest 1295:
1.31 avankest 1296: <h3 id="exceptions">Exceptions for the <code title="">XMLHttpRequest</code>
1297: Object</h3>
1.138 avankest 1298:
1299: <p>Several algorithms in this specification may result in an exception
1300: being thrown. These exceptions are all part of the group
1301: <code>ExceptionCode</code> and use the <code>DOMException</code> object
1302: which is defined in DOM Level 3 Core. In addition this specification
1303: extends the <code>ExceptionCode</code> group with several new
1304: constants as indicated below. [<cite><span>DOM3Core</span></cite>]</p>
1.31 avankest 1305:
1.138 avankest 1306: <pre class="idl">const unsigned short <span>SECURITY_ERR</span> = 18;
1.121 avankest 1307: const unsigned short <span>NETWORK_ERR</span> = 101;
1308: const unsigned short <span>ABORT_ERR</span> = 102;</pre>
1.31 avankest 1309:
1.138 avankest 1310: <p>The <dfn id="security-err"><code>SECURITY_ERR</code></dfn> exception is
1311: raised if an attempt is made to perform an operation or access some data
1312: in a way that would be a security risk or a violation of the user agent's
1313: security policy.</p>
1314:
1315: <!-- http://lists.w3.org/Archives/Public/public-webapi/2006May/0027.html -->
1316:
1317: <p class="note">The <code title="">SECURITY_ERR</code> exception is
1318: expected to be eventually folded into an update of the the DOM Level 3
1319: Core specification with an equivalent definition and identical constant
1320: value. Until that happens it is defined here to guide implementors. (This
1.153 avankest 1321: is also the reason the constant value is not in line with the other
1.138 avankest 1322: exceptions.)</p>
1323:
1.33 avankest 1324: <p>The <dfn id="network-err"><code>NETWORK_ERR</code></dfn> exception is
1.138 avankest 1325: raised when a network error occurs in synchronous requests.</p>
1.121 avankest 1326:
1.138 avankest 1327: <p>The <dfn id="abort-err"><code>ABORT_ERR</code></dfn> exception is
1328: raised when the user aborts a request in synchronous requests.</p>
1.121 avankest 1329:
1330:
1.11 avankest 1331:
1.29 avankest 1332: <h2 class="no-num" id="notcovered">Not in this Specification</h2>
1333:
1.143 avankest 1334: <p><em>This section is non-normative.</em></p>
1.29 avankest 1335:
1.72 avankest 1336: <p>This specification does not include the following features which are
1337: being considered for a future version of this specification:</p>
1.29 avankest 1338:
1339: <ul>
1340: <li><code>load</code> event and <code>onload</code> attribute;</li>
1341: <li><code>error</code> event and <code>onerror</code> attribute;</li>
1342: <li><code>progress</code> event and <code>onprogress</code> attribute;</li>
1343: <li><code title="">abort</code> event and <code>onabort</code> attribute;</li>
1344: <li>Timers have been suggested, perhaps an <code>ontimeout</code>
1345: attribute;</li>
1346: <li>Property to disable following redirects;</li>
1.30 avankest 1347: <li><code title="">responseXML</code> for <code>text/html</code>
1348: documents;</li>
1.40 avankest 1349: <li>Cross-site <code title="">XMLHttpRequest</code>;</li>
1.87 avankest 1350: <li><code>responseBody</code> to deal with byte streams;</li>
1.114 avankest 1351: <li><code>overrideMimeType</code> to fix up MIME types;</li>
1.87 avankest 1352: <li><code>getRequestHeader()</code> and
1353: <code>removeRequestHeader()</code>.</li>
1.29 avankest 1354: </ul>
1355:
1.1 avankest 1356: <h2 class="no-num" id="bibref">References</h2>
1.11 avankest 1357:
1.6 avankest 1358: <dl>
1.155 avankest 1359: <dt>[<dfn id="ref-dom2events">DOM2Events</dfn>]</dt>
1360: <dd><cite><a href="http://www.w3.org/TR/DOM-Level-2-Events/">Document
1.160 avankest 1361: Object Model (DOM) Level 2 Events Specification</a></cite>, T. Pixley,
1362: editor. W3C, November 2000.</dd>
1.155 avankest 1363:
1.145 avankest 1364: <dt>[<dfn id="ref-dom3core">DOM3Core</dfn>]</dt>
1.11 avankest 1365: <dd><cite><a href="http://www.w3.org/TR/DOM-Level-3-Core">Document Object
1.92 avankest 1366: Model (DOM) Level 3 Core Specification</a></cite>, A. Le Hors, P. Le
1.139 avankest 1367: Hégaret, L. Wood, G. Nicol, J. Robie, M. Champion, S. Byrne,
1368: editors. W3C, April 2004.</dd>
1.11 avankest 1369:
1.117 avankest 1370: <dt>[<dfn id="ref-ecmascript">ECMAScript</dfn>]</dt>
1.92 avankest 1371: <dd><cite><a href="http://www.ecma-international.org/publications/standards/Ecma-262.htm">ECMAScript
1372: Language Specification</a></cite>, Third Edition. ECMA, December 1999.</dd>
1.142 avankest 1373:
1.145 avankest 1374: <dt>[<dfn id="ref-html5">HTML5</dfn>]</dt>
1.142 avankest 1375: <dd><cite><a href="http://www.whatwg.org/specs/web-apps/current-work/">HTML 5</a></cite>
1.146 avankest 1376: (work in progress), Ian Hickson, editor. WHATWG, 2007.</dd>
1.14 avankest 1377:
1.145 avankest 1378: <dt>[<dfn id="ref-rfc2119">RFC2119</dfn>]</dt>
1.117 avankest 1379: <dd><cite><a href="http://ietf.org/rfc/rfc2119">Key words for use in RFCs to
1380: Indicate Requirement Levels</a></cite>, S. Bradner. IETF, March 1997.</dd>
1.12 avankest 1381:
1.145 avankest 1382: <dt>[<dfn id="ref-rfc2616">RFC2616</dfn>]</dt>
1.11 avankest 1383: <dd><cite><a href="http://ietf.org/rfc/rfc2616">Hypertext Transfer Protocol
1.92 avankest 1384: -- HTTP/1.1</a></cite>, R. Fielding, J. Gettys, J. Mogul, H. Frystyk, L.
1385: Masinter, P. Leach, T. Berners-Lee, editors. IETF, June 1999.</dd>
1.12 avankest 1386:
1.37 avankest 1387: <dt>[<dfn id="ref-rfc2617">RFC2617</dfn>]</dt>
1.11 avankest 1388: <dd><cite><a href="http://ietf.org/rfc/rfc2617">HTTP Authentication: Basic
1.92 avankest 1389: and Digest Access Authentication</a></cite>, P. Hallam-Baker, J.
1390: Hostetler, S. Lawrence, P. Leach, A. Luotonen, L. Stewart, editors. IETF,
1391: June 1999.</dd>
1.12 avankest 1392:
1.37 avankest 1393: <dt>[<dfn id="ref-rfc2965">RFC2965</dfn>]</dt>
1.19 avankest 1394: <dd><cite><a href="http://ietf.org/rfc/rfc2965">HTTP State Management
1.92 avankest 1395: Mechanism</a></cite>, D. Kristol, L. Montulli, editors. IETF, October
1396: 2000.</dd>
1.19 avankest 1397:
1.37 avankest 1398: <dt>[<dfn id="ref-rfc3986">RFC3986</dfn>]</dt>
1.11 avankest 1399: <dd><cite><a href="http://ietf.org/rfc/rfc3986">Uniform Resource Identifier
1.92 avankest 1400: (URI): Generic Syntax</a></cite>, T. Berners-Lee, R. Fielding, L. Masinter,
1401: editors. IETF, January 2005.</dd>
1.141 avankest 1402:
1403: <dt>[<dfn id="ref-rfc3987">RFC3987</dfn>]</dt>
1404: <dd><cite><a href="http://ietf.org/rfc/rfc3987">Internationalized
1405: Resource Identifiers (IRIs)</a></cite>, M. Duerst, M. Suignard, editors.
1406: IETF, January 2005.</dd>
1.28 avankest 1407:
1.92 avankest 1408: <dt>[<dfn id="ref-xml">XML</dfn>]</dt>
1409: <dd><cite><a href="http://www.w3.org/TR/xml/">Extensible Markup Language
1410: (XML) 1.0 (Fourth Edition)</a></cite>, T. Bray, J. Paoli, C.
1.117 avankest 1411: Sperberg-McQueen, E. Maler, F. Yergeau, editors. W3C, September 2006.</dd>
1.41 avankest 1412:
1.92 avankest 1413: <dt>[<dfn id="ref-xmlns">XMLNS</dfn>]</dt>
1414: <dd><cite><a href="http://www.w3.org/TR/xml-names/">Namespaces in XML
1.117 avankest 1415: (Second Edition)</a></cite>, T. Bray, D. Hollander, A. Layman, R. Tobin,
1416: editors. W3C, August 2006.</dd>
1.1 avankest 1417: </dl>
1.11 avankest 1418:
1.130 avankest 1419: <h2 class="no-num" id="acknowledgments">Acknowledgments</h2>
1.11 avankest 1420:
1.159 avankest 1421: <p>The editor would like to thank
1.12 avankest 1422:
1.163 avankest 1423: Addison Phillips,
1.159 avankest 1424: Ahmed Kamel,
1425: Alex Hopmann,
1426: Alex Vincent,
1427: Alexey Proskuryakov,
1428: Asbjørn Ulsberg,
1429: Boris Zbarsky,
1430: Björn Höhrmann,
1431: Cameron McCormack,
1432: Christophe Jolif,
1433: Charles McCathieNevile,
1434: Dan Winship,
1435: David Håsäther,
1436: Dean Jackson,
1437: Denis Sureau,
1438: Doug Schepers,
1439: Douglas Livingstone,
1440: Elliotte Harold,
1441: Eric Lawrence,
1.163 avankest 1442: Geoffrey Sneddon,
1.159 avankest 1443: Gideon Cohn,
1444: Gorm Haug Eriksen,
1445: Hallvord R. M. Steen,
1446: Håkon Wium Lie,
1447: Ian Davis,
1448: Ian Hickson,
1449: Ivan Herman,
1450: Jeff Walden,
1451: Jens Lindström,
1452: Jim Deegan,
1453: Jim Ley,
1454: Joe Farro,
1455: Jonas Sicking,
1456: Julian Reschke,
1457: Karl Dubost,
1458: Maciej Stachowiak,
1459: Magnus Kristiansen,
1460: Marc Hadley,
1461: Marcos Caceres,
1462: Mark Baker,
1463: Mark Nottingham,
1464: Mohamed Zergaoui,
1465: Pawel Glowacki,
1466: Robin Berjon,
1467: Ruud Steltenpool,
1468: Simon Pieters,
1469: Stewart Brodie,
1470: Sunava Dutta,
1471: Tom Magliery and
1472: Zhenbin Xu
1473:
1474: for their contributions to this specification.</p>
1.12 avankest 1475:
1.1 avankest 1476: <p>Special thanks to the Microsoft employees who first implemented the
1.143 avankest 1477: <code title="">XMLHttpRequest</code> interface, which was first widely
1478: deployed by the Windows Internet Explorer browser.</p>
1.12 avankest 1479:
1.143 avankest 1480: <p>Special thanks also to the WHATWG for drafting an initial version of
1481: this specification in their Web Applications 1.0 document (now renamed to
1482: HTML 5). [<cite><span>HTML5</span></cite>]</p>
1.12 avankest 1483:
1.143 avankest 1484: <p>Thanks also to all those who have helped to improve this specification
1485: by sending suggestions and corrections. (Please, keep bugging us with your
1.22 avankest 1486: issues!)</p>
1.1 avankest 1487: </body>
1488: </html>
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