估计是你的逻辑不对
你想取图片的长和宽,必须要在图片生成之后,楼主看看,在你取值之前图片生成了么??

解决方案 »

  1.   

    给个例子
    <html xmlns="http://www.w3.org/1999/xhtml" >
    <head runat="server">
        <title>Untitled Page</title>
      <script type="text/javascript">
    function checkValue(){
    debug.innerText="网页可见区域宽:document.body.clientWidth.....:"+document.body.clientWidth+"\n"+
    "网页可见区域高:document.body.clientHeight.....:"+document.body.clientHeight+"\n"+
    "网页可见区域高:document.body.offsetWidth.....:"+document.body.offsetWidth+"\n"+
    "网页可见区域高:document.body.offsetHeight.....:"+document.body.offsetHeight+"\n"+
    "网页正文全文宽:document.body.scrollTop.....:"+document.body.scrollTop+"\n"+
    "网页正文全文高:document.body.scrollLeft.....:"+document.body.scrollLeft+"\n"+
    "网页被卷去的高:window.screenTop.....:"+window.screenTop+"\n"+
    "网页被卷去的左:window.screenLeft.....:"+window.screenLeft+"\n"+
    "屏幕分辨率的高:window.screen.height.....:"+window.screen.height+"\n"+
    "屏幕分辨率的宽:window.screen.width.....:"+window.screen.width+"\n"+
    "屏幕可用工作区高度:window.screen.availHeight.....:"+window.screen.availHeight+"\n"+
    "屏幕可用工作区宽度:window.screen.availWidth.....:"+window.screen.availWidth+"\n"
    }</script>
        <script type="text/javascript">
       
        function IsConfirm()
        {
            return window.confirm('确定删除此记录吗?');
        }
        
        </script>
        </head>
        <body>
            <form id="form1" runat="server">
                <div onmouseover="aaaa()" onmouseout="bbbb()">
                <div id="content_a" style="display:none; position:absolute;">
                            这是第一个DIV </div>
                             <input id="Radio1" type="radio" name="aaa" value="1"/>
                    <input id="Radio2" type="radio" name="aaa" value="2"/>
                    <asp:RadioButton ID="RadioButton1" runat="server" />
                     <input type="button" onclick="checkValue();" value="尺寸调试">改变窗口的大小点击按钮看数值的变化
                         <div id="debug"></div>
                    <asp:LinkButton ID="LinkButton1" runat="server" OnClientClick="return IsConfirm()" >LinkButton</asp:LinkButton>
                </div>
                
            </form>
        </body>
    </html>