常用JS验证函数

//日期验证 yyyy-mm-dd
function IsDate(str)
{
    var r = str.match(/^(\d{1,4})(\-|\/)(\d{1,2})\2(\d{1,2})$/);
    if(r==null) return false;
    var d= new Date(r[1], r[3]-1, r[4]);
    return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]);
}

//验证格式 :2010-7-12 17:34:28
functionCheckDateTime(str) 
 {   
    var reg =/^(\d+)-(\d{ 1,2 })-(\d{ 1,2 }) (\d{ 1,2 }):(\d{ 1,2 }):(\d{ 1,2})$/;   
    var r =str.match(reg);   
   if(r==null)returnfalse;   
   r[2]=r[2]-1;   
    var d= newDate(r[1],r[2],r[3],r[4],r[5],r[6]);   
   if(d.getFullYear()!=r[1])return false;   
   if(d.getMonth()!=r[2])return false;   
   if(d.getDate()!=r[3])return false;   
   if(d.getHours()!=r[4])return false;   
   if(d.getMinutes()!=r[5])return false;   
   if(d.getSeconds()!=r[6])return false;   
    return true;   
 }