js 验证手机号码和座机号码

"text/javascript" >

function  checkTel(tel)
{
   var  mobile = /^1[3|5|8]\d{9}$/ , phone = /^0\d{2,3}-?\d{7,8}$/;
   return  mobile.test(tel) || phone.test(tel);
}
alert(checkTel( '13590871234' ));      //true
alert(checkTel( '020-12345678' ));     //true
alert(checkTel( '1234' ));             //false