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JS Upload picture Preview

Source: Internet
Author: User
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Pre-upload preview of images used in recent projects, compatible with IE6-9,FF

<body>            <input type=file name= "Doc" id= "Doc" onchange= "Javascript:setimagepreview ();" >



Because there are multiple upload buttons in the project, you need to make some changes to the online example, actually using the code:

Copy Code
function Setimagepreview (fileobj, Previewobj, localimg) {

var Docobj=document.getelementbyid (fileobj), Var Imgobjpreview=document.getelementbyid (previewobj), if (    Docobj.files && Docobj.files[0]) {//Firefox, directly set img attribute ImgObjPreview.style.display = ' block ';    ImgObjPreview.style.width = ' 120px ';    ImgObjPreview.style.height = ' 80px ';    IMGOBJPREVIEW.SRC = Docobj.files[0].getasdataurl (); Firefox 7 or above can not be obtained using the above Getasdataurl () method, need a way imgobjpreview.src = window. Url.createobjecturl (Docobj.files[0]);}    else{//ie, use the filter Docobj.select ();    var imgsrc = Document.selection.createRange (). text;    var localimagid = document.getElementById (localimg);    The initial size must be set localImagId.style.width = "120px";    LocalImagId.style.height = "80px"; Image exception capture to prevent users from modifying suffixes to forge pictures try{localimagid.style.filter= "Progid:DXImageTransform.Microsoft.AlphaImageLoader (sizing        Method=scale) ";    LocalImagId.filters.item ("DXImageTransform.Microsoft.AlphaImageLoader"). src = imgsrc;        }catch (e) {alert ("The image you uploaded is not in the correct format, please select it again!"); return false;   } ImgObjPreview.style.display = ' none '; Document.selection.empty ();} return true;

}

JS Upload picture Preview

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Related Keywords:
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