Javascript在ASP.NET中的用法:计算还剩余输入多少个字符
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="javascriptdemo.aspx.cs" Inherits="dupcit.javascriptdemo" %> <!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"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Javascript用法:计算还剩余输入多少个字符</title> <meta name="description" content="涂聚文,捷为工作室,经营信息流,物流,人力资源流,资本流的系统解决方案的开发与设计和服务,geoVI studio.Geovin Du. Systems Solution to Fund flow,and Information flow,and Material flow,and Control flow,and Human Resource.Applied software development,design and service。."/> <meta name="description" content="Study,Communicate。 "/> <meta name="Robots" content="all index follow "/> <meta name="Author" content="涂聚文" /> <meta name="keywords" content="涂聚文,捷为工作室,经营信息流,物流,人力资源流,资本流的系统解决方案的开发与设计和服务" /> <link rel="shortcut icon" href="favicon.ico" type="image/x-icon" /> <link rel="icon" href="favicon.ico" type="image/ico" /> <link rel="bookmark" href="favicon.ico"/> <script type="text/javascript" language="javascript"> function validatelimit(obj, maxchar) { if (this.id) obj = this; var remaningChar = maxchar - obj.value.length; document.getElementById('<%= Label1.ClientID %>').innerHTML = remaningChar; if (remaningChar <= 0) { obj.focus(); obj.value = obj.value.substring(maxchar, 0); alert('Character Limit exceeds!'); return false; } else { return true; } } </script> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> <asp:TextBox ID="txt_Skill" runat="server" TextMode="MultiLine" onkeyup="validatelimit(this,50)"></asp:TextBox> </div> </form> </body> </html>
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