<%@ 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>