Programming Tutorials

By: aathishankaran : 2007年03月21日

Description: Tokens are the smallest individual words, phrases, or characters that JavaScript can understand. When JavaScript is interpreted, the browser parses the script into these tokens while ignoring comments and white space. JavaScript tokens fit in five categories:

By: aathishankaran : 2007年03月21日

Description: HTML gives you the capability to create remarkable static Web pages. Although these documents have been creative, interesting, and by all means useful, JavaScript gives you the capability to make these extensive static pages interactive and more responsive to user actions and input. Extending your HTML pages with JavaScript puts more power to your page and gives you more flexibility with what your HTML can do.

By: aathishankaran : 2007年03月21日

Description: You can also use this statement if and else to evaluate an expression. Instead of returning a value based on the result as a conditional operator.

By: aathishankaran : 2007年03月21日

Description: An operator you already know is the assignment operator. Its most basic function is assigning a value to a variable, thereby placing the value in memory.

By: aathishankaran : 2007年03月21日

Description: JavaScript is but a scripting language, not a tool in and of itself. The software that actually runs the JavaScript code you write is the Web browser. JavaScript depends on the Web browser to support it. If the browser does not support it, your code will be ignored. Even worse, if you do not account for unsporting browsers, the JavaScript code itself is displayed as text on your page.

By: aathishankaran : 2007年03月21日

Description: JavaScript is but a scripting language, not a tool in and of itself. The software that actually runs the JavaScript code you write is the Web browser. JavaScript depends on the Web browser to support it. If the browser does not support it, your code will be ignored. Even worse, if you do not account for unsporting browsers, the JavaScript code itself is displayed as text on your page.

By: aathishankaran : 2007年03月21日

Description: A long-time feature in browser software is the capability to track where you have surfed within a given session. This feature has come to .be known as a history list, and it's available in both the Navigator and Internet Explorer's Go menus. The history object is the JavaScript equivalent to this list. You can work with it as a user might, moving forward or backward in a list to navigate where a user has been.

By: aathishankaran : 2007年03月21日

Description: The second set of objects never appears visually, but you work with them within your JavaScript code. You can call them built-in language objects because they are simply constructs of the JavaScript language. Anyone who has worked with any programming language before has worked with the following types of objects:

By: aathishankaran : 2007年03月21日

Description: When you begin to look closely at the JavaScript object hierarchy you can see that each object falls into one of two categories: Navigator objects and built-in language objects. This section looks at these sets and introduces you to each of the objects within them.

By: aathishankaran : 2007年03月21日

Description: JavaScript execution begins after the HTML document loads into the browser, but before the users can interact with the document. The browser reads in all JavaScript statements, as it does HTML statements, and then begins interpreting the JavaScript code.