Below are some interesting examples that I have compiled for you. Interested students can take a look.
<script language="JavaScript">
<!--
var d1 = new Date();
var d2 = new Date();
d2.setMonth(0);
d2.setDate(1);
var rq = d1-d2;
var s1 = Math.ceil(rq/(24*60*60*1000));
var s2 = Math.ceil(s1/7);
alert("今天是本年第"+s1+"天，第"+s2+"周");//周日做为下周的开始计算
//-->
</script>The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.
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