<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="weiboFontTest.Default" %>

 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
 
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
      <script language="javascript">
          function txtWordChangeHandler(sender) {
              var txtWord = document.getElementById("txtWord");
 
              if (10 - sender.value.length < 0) {
                  txtWord.innerHTML = 0;
                  sender.value = sender.value.substring(0, 10);
               }
              else 
              {
                  txtWord.innerHTML = 10 - sender.value.length; 
              }
              
          }
    </script>
    <div>
        不能超过10个字，你还可以输入<span id="txtWord">10</span>个字<br />
        <asp:TextBox ID="TextBox1" runat="server" Height="177px" TextMode="MultiLine" 
            Width="356px" onkeyup="txtWordChangeHandler(this)"></asp:TextBox>
    </div>
    <asp:Button ID="btnsubmit" runat="server" Text="提交" />
    </form>
</body>
</html>