js/JQuery.validate身份证校验

var showErrMsg="请输入合法的身份证！";
jQuery.validator.addMethod("checkIdcard", function(value, element,param) {
 var idcard = value;
 if(idcard==""){
  return true;
 }
 var regex1 = /^[1-9][0-7]\d{4}((([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]{1}|[0-9]{1}[1-9][0-9]{2}|[1-9][0-9]{3})(((0[13578]|1[02])(0[1-9]|[12][0-9]|3[01]))|((0[469]|11)(0[1-9]|[12][0-9]|30))|(02(0[1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})(0[48]|[2468][048]|[13579][26])|((0[48]|[2468][048]|[3579][26])00))0229))\d{3}(\d|X|x)?$/;
 
 /*身份号码位数及格式检验*/
 switch (idcard.length) {
   case 15:
  if ( (parseInt(idcard.substr(6,2))+1900) % 4 == 0 || ((parseInt(idcard.substr(6,2))+1900) % 100 == 0 && (parseInt(idcard.substr(6,2))+1900) % 4 == 0 )){
   var regex2 = /^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$/;//测试出生日期的合法性
  } else {
   var regex2 = /^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$/;//测试出生日期的合法性
  }

  if(regex2.test(idcard))
   return true;
  else
   return false;
  break;
   case 18:
    if(regex1.test(idcard)){
   var S = (parseInt(idcard[0]) + parseInt(idcard[10])) * 7 + (parseInt(idcard[1]) + parseInt(idcard[11])) * 9 + (parseInt(idcard[2]) + parseInt(idcard[12])) * 10 + (parseInt(idcard[3]) + parseInt(idcard[13])) * 5 + (parseInt(idcard[4]) + parseInt(idcard[14])) * 8 + (parseInt(idcard[5]) + parseInt(idcard[15])) * 4 + (parseInt(idcard[6]) + parseInt(idcard[16])) * 2 + parseInt(idcard[7]) * 1 + parseInt(idcard[8]) * 6 + parseInt(idcard[9]) * 3;
   var Y = S % 11;
   var M = "F";
   var JYM = "10X98765432";
   M = JYM.substr(Y, 1);
   /*判断校验位*/
   if (M == idcard[17].toUpperCase()) {
         //alert(Errors[0]+"18");
    return true;
   } else {
    //alert(Errors[3]);
    //showErrMsg = Errors[3];
    return false;
   }
  }else{
   return false;
  }
  break;
   default:
    //alert(Errors[1]);
  //showErrMsg = Errors[1];
  return false;
 }
}, jQuery.validator.format(showErrMsg));