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<%@ 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 >
<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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