hao_2468

  博客园 :: 首页 :: 博问 :: 闪存 :: 新随笔 :: 联系 :: 订阅 订阅 :: 管理 ::
<head runat="server">
<style type="text/css">#newPreview {
FILTER: progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale)
}
</style>
<script>
//预览上传图片
        function PreviewImg(imgFile)
        {
            if(imgFile.value.length>0){
            var af="jpg,gif,png";
                if(eval("with(imgFile.value)if(!/"+af.split(",").join("|")+"/ig.test(substring(lastIndexOf('.')+1,length)))1;"))
                {
                    alert("允许上传的文件类型:\n"+af);
                   imgFile.createTextRange().execCommand('delete')
                }else
                {
                     var newPreview = document.getElementById("newPreview");
                    newPreview.filters.item("DXImageTransform.Microsoft.AlphaImageLoader").src = imgFile.value;
                    newPreview.style.width = "250px";
                    newPreview.style.height = "300px";
                }
            }   
        }
</script>
</head>
<body>
<form id="form1" runat="server">
<input type=file name=path onpropertychange="PreviewImg(this)"/>
<div id="newPreview"> &nbsp;</div>
</form> </body>
posted on 2009-09-11 11:52  hao_2468  阅读(198)  评论(0编辑  收藏  举报