校验日期的函数

 1<script language="javascript">   
 2function isDate(str)   
 3{   
 4var r = str.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/);   
 5if(r==null)return false; var d = new Date(r[1], r[3]-1, r[4]);   
 6return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]);   
 7}   
 8alert(isDate("2002-01-31"));   
 9alert(isDate("2002-01-41"));   
10</script>

 1<script language="javascript">   
 2function isTime(str)   
 3{   
 4var r = str.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2}) (\d{1,2}):(\d{1,2}):(\d{1,2})$/);   
 5if(r==null)return false; var d = new Date(r[1], r[3]-1,r[4],r[5],r[6],r[7]);   
 6return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]&&d.getHours()==r[5]&&d.getMinutes()==r[6]&&d.getSeconds()==r[7]);   
 7}   
 8alert(isTime("2002-1-31 12:34:56"));   
 9alert(isTime("2001-2-29 12:54:56"));   
10alert(isTime("2002-1-41 12:00:00"));   
11</script>