<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
#box{width: 300px;height: 70px;border: 1px solid gray}
</style>
</head>
<body>
<div id="box"></div>
<button id="btn">按钮</button>
<script>
var o=document.getElementById('box')
document.getElementById("btn").onclick=function () {
getTime();
}
function getTime(){
var date=new Date();//调取当前时间
var year=date.getFullYear();//调取年;
var month=date.getMonth()+1//调取月;
var day=date.getDate();//调取日
var hours=date.getHours();//调取时;
var minutes=date.getMinutes();//调取分;
var seconds=date.getSeconds();//调取秒
var weekday=date.getDay();//调取周几;
//转换星期数值
switch(weekday){
case 0:weekday="日"
break;
case 1:weekday="一"
break;
case 2:weekday="二"
break;
case 3:weekday="三"
break;
case 4:weekday="四"
break;
case 5:weekday="五"
break;
case 6:weekday="六"
break;
}
//显示时间拼接
var time='现在是'+year+'年'+month+"月"+day+'日'+hours+'时'+minutes+'分'+seconds+'秒'+'星期'+weekday;
o.innerHTML=date;//放在div中
setInterval(getTime,1000);//启动定时器
}
</script>
</body>
</html>js调取当前系统时间年月日星期
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转载自blog.csdn.net/qq_43076883/article/details/82631300
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