不逼逼，直接上代码：(JS原生)

<script language="javascript">
	var now=new Date();
	var x = new Array("星期日", "星期一", "星期二","星期三","星期四", "星期五","星期六");
	var year = now.getFullYear();
	var month = now.getMonth()+1;
	var day = now.getDate();
	var zhou = x[now.getDay()];
	document.write("<span class='theTopDate'>您好，今天是"+year+"年"+month+"月"+day+"日&nbsp;&nbsp;"+zhou+"</span>");
</script>