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Pre-upload JavaScript images (compatible with all browsers)

Source: Internet
Author: User
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Function description

Local previews of images via JavaScript (no uploading to the server), compatible with all browsers (ie6&ie6+, Chrome, Firefox).

Implementation Essentials

For Chrome, Firefox, IE10 use FileReader.

For ie6~9, use filter filter:progid:DXImageTransform.Microsoft.AlphaImageLoader to implement.

 <!DOCTYPE HTML>   <HTML>  <Head>  <Metahttp-equiv= "Content-type"content= "Text/html;charset=utf-8" />  <styletype= "Text/css">#preview,. IMG, img{width:200px;Height:200px;   }#preview{Border:1px solid #000;  }   </style>   </Head>  <Body>   <DivID= "Preview"></Div>  <inputtype= "File"onchange= "Preview (this)" />   <Scripttype= "Text/javascript">     functionPreview (file) {varPrevdiv=document.getElementById ('Preview'); if(File.files&&file.files[0])   {   varReader= NewFileReader (); Reader.onload= function(evt) {prevdiv.innerhtml= '' +Evt.target.result+ '"/>'; } reader.readasdataurl (file.files[0]); }   Else{prevdiv.innerhtml= '<div class= "img" style= "Filter:progid:DXImageTransform.Microsoft.AlphaImageLoader (sizingmethod=scale,src= \ '' +File.value+ '\ ' "></div>'; }   }   </Script>   </Body>   </HTML>

Pre-upload JavaScript images (compatible with all browsers)

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