实现代码：
<html> <head> <link type="text/css" href="https://www.jb51.net/Skin.css"> <style> <!-- table{ text-align: center } --> </style> </head> <body> <div> <script language="javascript"> var my = new Date(); function showc() { var k=1; var j=1; var today; var tomonth; var theday=1;//日期 var max; var temp; var tempday;//这个月第一天的星期 document.write ("<b>" + my.getFullYear() + "-" + (my.getMonth()+1) + "</b>"); document.write ("<table>"); document.write ("<tr>"); document.write ("<td><font color='red'>Sun</font></td>"); document.write ("<td>Mon</td>"); document.write ("<td>Tue</td>"); document.write ("<td>Wed</td>"); document.write ("<td>Thu</td>"); document.write ("<td>Fri</td>"); document.write ("<td>Sat</td>"); document.write ("</tr>"); temp=my.getDate(); my.setDate(1); //document.write (my.getDate()); tempday=my.getDay();//返回第一天是星期几 my.setDate(temp); today=my.getDay();//返回现在星期几 switch ((my.getMonth()+1)) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: max=31; break; case 4: case 6: case 9: case 11: max=30; break; default: max=29;//这里没有考虑闰月！！ //document.write (max); } for(k=0;k<6;k++) { document.write ("<tr>"); for(j=0;j<=6;j++) { document.write ("<td>"); if(j>=(tempday)) { tempday=0;//设置为最小，相当于取消判断条件 if(theday<=max) { document.write ("<a title=" + my.getFullYear() + "-" + (my.getMonth()+1) + "-" +theday + " target='_blank' href=detail.asp?date=" + theday + ">"); if(theday==my.getDate()) document.write ("<font color='green'>[" + theday + "]</font></a>"); else if(j==0) document.write ("<font color='red'>" + theday + "</font></a>"); else document.write (theday + "</a>"); theday++; } } document.write ("</td>"); } document.write ("</tr>"); } document.write ("</table>"); } showc(); </script> </div> <body> </html>