<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<script language="javascript">
var mData=new Date();
var ynow=mData.getFullYear();
var mnow=mData.getMonth();
var dnow=mData.getDate();
var n1str=new Date(ynow,mnow,1);
function is_leap(year){
return (year%100==0?res=(year%400==0?1:0):res=(year%4==0?1:0));
}
var firstDay=n1str.getDay();
var m_days=new Array(31,28+is_leap(ynow),31,30,31,30,31,31,30,31,30,31);
var tr_str=Math.ceil((m_days[mnow]+firstDay)/7);
document.write("<table border='1' align='center' width='220' cellspacing='0'><tr><td align='center'>日</td><td align='center'>一</td><td align='center'>二</td><td align='center'>三</td><td align='center'>四</td><td align='center'>五</td><td align='center'>六</td></tr>");
for(i=0;i<tr_str;i++)
{
document.write("<tr>");
for(k=0;k<7;k++){
idx=i*7+k;
date_str=idx-firstDay+1;
(date_str<=0||date_str>m_days[mnow])?date_str=" ":date_str=idx-firstDay+1;
date_str==dnow?document.write("<td align='center' bgcolor='red'>"+date_str+"</td>"):document.write("<td align='center'>"+date_str+"</td>");
}
document.write("</tr>")
}
document.write("</table>");
</script>
</body>
</html>原作者是本站的amork。http://blog.csdn.net/amork/article/details/7257212