本节内容：
js中定时器的使用方法。
代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_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>js定时器_http://www.jb200.com</title>
<script language="javascript" type="text/javascript">
var YC = new Object();
function beginYC()
{
var secondsYC = document.getElementById("txtYCSeconds").value;
try
{
YC = setTimeout("alert('延迟"+secondsYC+"秒成功')",secondsYC*1000);
}
catch(e)
{
alert("请输入正确的秒数。");
}
}
function overYC()
{
clearTimeout(YC);
YC=null;
alert("终止延迟成功。");
}
/***定时器的使用******/
var timerDS = new Object();
var timerDDS = new Object();
function beginDS()
{
sn.innerHTML = "0";
timerDS = setInterval("addOne()",parseInt(document.getElementById("txtIntervalSeconds").value,10)*1000);
}
function goonDS()
{
timerDS = setInterval("addOne()",parseInt(document.getElementById("txtIntervalSeconds").value,10)*1000);
}
function overDS()
{
clearInterval(timerDS);
timerDS=null;
}
function delayDS()
{
overDS();
timerDDS = setTimeout("goonDS()",document.getElementById("txtDDSSeconds").value*1000);
}
function addOne()
{
if(sn.innerHTML=="10")
{
overDS();
alert("恭喜你，已成功达到10秒");
return;
}
sn.innerHTML=parseInt(sn.innerHTML,10)+1;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
延迟器的使用：</div>
<div>
<label id="Label2" title="延迟秒数："></label>
<input type="text" id="txtYCSeconds" value="3" />
<input type="button" id="btnBYC" onclick="javascript:beginYC()" value="开始延迟" />
<input type="button" id="btnOYC" onclick="javascript:overYC()" value="终止延迟" />
<input type="button" id="Button1" onclick="javascript:alert('good monrning');" value="普通弹窗" />
</div>
<br />
<div>
Js定时器的使用：</div>
<div>
<div id="sn">0</div>
<label id="Label1" title="定时间隔秒数："></label>
<input type="text" id="txtIntervalSeconds" value="1" />
<input type="button" id="btnBDS" onclick="javascript:beginDS()" value="启动定时" />
<input type="button" id="btnODS" onclick="javascript:overDS()" value="终止定时" />
<input type="button" id="btnGDS" onclick="javascript:goonDS()" value="继续定时" />
<label id="ds" title="延迟秒数："></label>
<input type="text" id="txtDDSSeconds" value="5" />
<input type="button" id="btnDDS" onclick="javascript:delayDS()" value="延迟定时" />
</div>
</form>
</body>
</html>