Wikipedia:WikiProject User scripts/Scripts/Upload Preview

 /* On [[Special:Upload|Upload]] page this script allows you to preview Summary field using [[AJAX]]. 

 Without the script you have to first upload image and then check how your description look like. See why: [[:mediazilla:2537]], comment #6. The script is using [{{SERVER}}/skins-1.5/common/preview.js preview.js] which is a part of [[:mw:Manual:Live preview|Live preview]] which is not currently used by Mediawiki.

 Installation: add to [[Special:Mypage/monobook.js|your monobook.js]]
 * either <code>importScript('{{FULLPAGENAME}}')</code>
 * or the code below:
 <syntaxhighlight lang=javascript>*/

 if(mw.config.get('wgCanonicalNamespace')=='Special'&&mw.config.get('wgCanonicalSpecialPageName')=='Upload'){
 addOnloadHook(uploadPreviewInit)
 //prepare Mediawiki Live Preview
 wgLivepreviewMessageLoading='Wait...'
 wgLivepreviewMessageReady='Done'
 document.write('<script type= "text/javascript" src="/skins-1.5/common/preview.js"></script>')
 }

 functionuploadPreviewInit(){
 wpUploadDescription=document.getElementById('wpUploadDescription')//global var
 varbut=document.createElement('input')
 but.type='button'
 but.value='Preview'
 but.onclick=uploadPreviewDo
 wpUploadDescription.parentNode.insertBefore(but,wpUploadDescription.nextSibling)
 }

 functionuploadPreviewDo(){
 if(!window.wikiPreview)//create preview div
 wikiPreview=document.createElement('div')
 wikiPreview.id='wikiPreview'
 wpUploadDescription.parentNode.insertBefore(wikiPreview,wpUploadDescription.nextSibling.nextSibling)
 lpDoPreview(wpUploadDescription.value,'/w/index.php?action=submit&live')
 }
 //</syntaxhighlight>