<script>
function setImagePreview() {
var docObj=document.getElementById("doc");
var imgObjPreview=document.getElementById("preview");
if(docObj.files && docObj.files[0]){
// Firefox, go ahead and do it img attribute
imgObjPreview.style.display = 'block';
imgObjPreview.style.width = '300px';
imgObjPreview.style.height = '120px';
//imgObjPreview.src = docObj.files[0].getAsDataURL();
// firefox 7 The above version cannot be used getAsDataURL() Way to get, need 1 Under way
imgObjPreview.src = window.URL.createObjectURL(docObj.files[0]);
}else{
//IE Next, use a filter
docObj.select();
var imgSrc = document.selection.createRange().text;
var localImagId = document.getElementById("localImag");
// You must set the initial size
localImagId.style.width = "250px";
localImagId.style.height = "200px";
// Image abnormal capture, prevent users to modify the suffix to forge the image
try{
localImagId.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)";
localImagId.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgSrc;
}catch(e){
alert(" The format of the picture you uploaded is not correct, please choose again !");
return false;
}
imgObjPreview.style.display = 'none';
document.selection.empty();
}
return true;
}
</script>
<body>
<input type=file name="doc" id="doc" onchange="javascript:setImagePreview();">
<p><div id="localImag"><img id="preview" width=-1 height=-1 style="diplay:none" /></div></p>