<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
</head>
<body>
</body>
<script type="text/javascript">
function GetDateStr(AddDayCount) {
var dd = new Date(); //获得时间戳
dd.setDate(dd.getDate()+AddDayCount);//获取AddDayCount天后的日期
var y = dd.getFullYear();
var m = (dd.getMonth()+1)<10?"0"+(dd.getMonth()+1):(dd.getMonth()+1);//获取当前月份的日期，不足10补0
var d = dd.getDate()<10?"0"+dd.getDate():dd.getDate();//获取当前几号，不足10补0
return y+"-"+m+"-"+d;
}
console.log('半年前' + GetDateStr(-180));
</script>
<script type="text/javascript">
function dateDelay(num){
// 获取当前的时间戳
var now = new Date();
// 设置推迟的时间戳
now.setDate(now.getDate() + num);
// 获取年
var year = now.getFullYear();
// 获取月
var month = (now.getMonth()+1)<10?"0"+(now.getMonth()+1):(now.getMonth()+1);
// 获取天
var day = (now.getDate())<10?"0"+(now.getDate()):(now.getDate());
return (year+ "-" +month + "-" + day);
}
console.log('昨天' + dateDelay(-3));
</script>
</html>
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