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js图片上传预览效果



<script language="javascript"> 
function ShowImage(FileUploadID, ImgID) {
    if (document.getElementById(FileUploadID).value != "") {
        document.getElementById(ImgID).style.display = "block"
        document.getElementById(ImgID).src = getPath(document.getElementById(FileUploadID));
    }
 }
 
 function getPath(obj) {
    if (obj) {
        if (window.navigator.userAgent.indexOf("MSIE") >= 1) {
            obj.select(); return document.selection.createRange().text;
        }
        else if (window.navigator.userAgent.indexOf("Firefox") >= 1) {
            if (obj.files) { return obj.files.item(0).getAsDataURL(); }
            return obj.value;
        }
         return obj.value;
    }

</script>

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