js脚本实现上传图片无刷新预览!

 

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<script type="text/javascript">...
function changeimg(imgid,fileid)
...{
    document.getElementById(imgid).src=document.getElementById(fileid).value;
}
</script>
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
        <img src="" style="width: 117px; height: 63px" id="image1"  />
        <input id="File2" type="file" runat="server" onchange="changeimg('image1','File2')"/>
    </form>
</body>
</html>

 效果如图：