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function
setImagePreview() { var
docObj = document.getElementById("doc"); var
fileName = docObj.value; var
imgObjPreview = document.getElementById("preview"); if
(docObj.files && docObj.files[0]) { //火狐下，直接设img属性 imgObjPreview.style.display = ‘block‘; imgObjPreview.style.width = ‘120px‘; imgObjPreview.style.height = ‘150px‘; imgObjPreview.src = docObj.files[0].getAsDataURL(); } else
{ //IE下，使用滤镜 docObj.select(); var
imgSrc = document.selection.createRange().text; var
localImagId = document.getElementById("localImag"); //必须设置初始大小 localImagId.style.width = "120px"; localImagId.style.height = "150px"; //图片异常的捕捉，防止用户修改后缀来伪造图片 try
{ localImagId.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)"; localImagId.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgSrc; } catch
(e) { alert("您上传的图片格式不正确，请重新选择!"); return
false; } imgObjPreview.style.display = ‘none‘; document.selection.empty(); } return
true; } |
原文：http://www.cnblogs.com/hbhzz/p/3627606.html