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博客园 - Ruxuan

今天在sunweel.com买的楼梯,好喜欢 大智慧日K线的数据结构 换行与回车的区别(转) ASP.NET跨应用程序进行登录的解决 reporting services工具栏的参数选择区域顯示 - Ruxuan - 博客园 关于“当前不会命中断点” 在改变sql登陆密码后,怎么重新部署Reporting Service Reporting Service初体验 SQLHelper 关闭web父窗口 javascript calendar 实例分析CSS属性Display与Visibility不同 Bom left-right menu 畫面捲動示範 格式化 没有光驱软驱系统照装 Reporting Services URL访问 Reporting Services 的软件要求
javascript setTimeout 和 setInterval 区别
Ruxuan · 2006-07-04 · via 博客园 - Ruxuan

[setTimeout]
setTimeout(表达式,延时时间)
在执行时,是在载入后延迟指定时间后,去执行一次表达式,记住,次数是一次

用setTimeout实现的自动变化显示随机数的效果:

<html>
<head>
<script>
window.onload=sett;
function sett()
{
document.body.innerHTML=Math.random();
setTimeout("sett()",500);
}
</script>
</head>
<body>
</body>
</html>

[setInterval]
setInterval(表达式,交互时间)
则不一样,它从载入后,每隔指定的时间就执行一次表达式

用setInterval实现的自动变化显示随机数的效果:

<html>
<head>
<script>
function sett()
{
document.body.innerHTML=Math.random();
}
setInterval("sett();", 500);
</script>
</script>
</head>
<body>
</body>
</html>