setInterval施用每隔一定时间执行操作 _Web前端

setInterval使用每隔一定时间执行操作

<html>
<head>
<title>每5秒执行一次操作</title>
<script language="javascript" type="text/javascript">

function time1(){
	var d = new Date();
	var hour = d.getHours();
	var minute = d.getMinutes();
	var second = d.getSeconds();
	var time = hour+ ":"+minute +":"+ second;

	document.getElementById("s").value =time;

}
function time2(){
	var d = new Date();
	var hour = d.getHours();
	var minute = d.getMinutes();
	var second = d.getSeconds();
	var dd = new Date("12:00:00");
	var time = hour+ ":"+minute +":"+ second;

	document.getElementById("ss").value =  time;

}
setInterval("time1()", 1000);
setInterval("time2()", 2000);
</script>
</head>
<body>
每隔1秒执行一次 ：
<input type="text" id="s" />
<br />
每隔2秒执行一次 ：
<input type="text" id="ss" />
</body>
</html>

setInterval施用 每隔一定时间执行操作

setInterval施用每隔一定时间执行操作