<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title
</title>
</head>
<body>
<input type="text" id="clock" style="width: 249px">
<input type="button" value="begin" onclick="begin_click()">
<input type="button" value="End" onclick="End()">
<input type="button" value="timeout" onclick="f1()">
<script>
function Timeout() {
alert(123);
}
function f1() {
var ID=setTimeout(Timeout,1000); //1秒后执行一次,只执行一次
clearTimeout(ID) //清除定时器
}
function begin() {
var stime=getTime();
var ret=document.getElementById("clock"); //找到id为"clock"的元素
ret.value=stime; //给元素赋值
}
var ID;
function begin_click() {
if (ID==undefined){
begin();
ID=setInterval(begin,1000);//开启循环定时器
}
}
function End() {
clearInterval(ID); //清除定时器
ID=undefined;
}
// ---------------------------------定时器-----
function getTime() {
var date_obj= new Date();
var year=date_obj.getFullYear();
var month=date_obj.getMonth()+1;
var day=date_obj.getDate();
var hour=date_obj.getHours();
var minute=date_obj.getMinutes();
var seconds=date_obj.getSeconds();
var week=date_obj.getDay();
return year+"年"+month+"月"+f(day)+"日"+" "+hour+": "+minute+" :"+seconds+" "+num_week(week)
}
function f(num) {
if (num<10){
return "0"+num;
}
return num;
}
function num_week(n) {
week=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"]
return week[n]
}
</script>
</body>
</html>
转载于:https://www.cnblogs.com/jiefangzhe/p/8149930.html
相关资源：python 定时器每天就执行一次的实现代码
