EasyShop/test.html

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<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>
<script>
    function setImagePreview() {
        var docObj = document.getElementById("doc");
        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 = '300px';
            imgObjPreview.style.height = '120px';
            //imgObjPreview.src = docObj.files[0].getAsDataURL();

            //火狐7以上版本不能用上面的getAsDataURL()方式获取，需要一下方式  
            imgObjPreview.src = window.URL.createObjectURL(docObj.files[0]);
        } 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 = "300px";
            localImagId.style.height = "120px";
            //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;
    }
</script>
</body>
</html>