直接上代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<script type="text/javascript">
//判断某天是周几 IE9以上支持
function getMyDay(date) {
var week;
var num = date.getDay();
switch (num) {
case 0:
week = '周日';
break;
case 1:
week = "周一";
break;
case 2:
week = '周二';
break;
case 3:
week = "周三";
break;
case 4:
week = "周四";
break;
case 5:
week = '周五';
break;
case 6:
week = "周六";
break;
}
return week;
}
var w1 = getMyDay(new Date("2018-01-30"));
document.write(w1);
</script>
</body>
</html>