//身份证检查函数 function validateCardNo(certid) 
{ 
var reg_15 = /\d{15}/; var reg_18 = /\d{17}([0-9]{1}|x|X)/; var monthPerDays = new Array("31","28","31","30","31","30","31","31","30","31","30","31"); certid = certid.toLowerCase(); if(certid == "") 
{ return
false; 
}
var ret = certid.length == 15?reg_15.test(certid):reg_18.test(certid); if(!ret) { return
false; }
birthDate = certid.length == 15?"19" + certid.substr(6,6):certid.substr(6,8); year = birthDate.substr(0,4); if(birthDate.substr(4,1) == '0') month = birthDate.substr(5,1); else
month = birthDate.substr(4,2); if(birthDate.substr(6,1) == '0') day = birthDate.substr(7,1); else
day = birthDate.substr(6,2); dd = parseInt(day); mm = parseInt(month); yy = parseInt(year); days = new Date(); gdate = days.getDate(); gmonth = days.getMonth(); gyear18 = days.getFullYear()-18; if(mm>12 || mm<1 ||dd>31 || dd<1) { return
false; }
if(year % 100 != 0) { if(year % 4 ==0) monthPerDays[1] = 29; }
else
{ if(year % 400 == 0) monthPerDays[1] = 29; }
if(monthPerDays[mm - 1] < dd) { return
false; }
if(certid.length == 18) { var arTemp = new Array(7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2); var num = 0; var proof; for(var i=0; i < 17; i ++) { num = num + certid.substr(i,1) * arTemp[i]; }
num = num % 11; switch(num) { case 0:proof='1';break; case 1:proof='0';break; case 2:proof='x';break; case 3:proof='9';break; case 4:proof='8';break; case 5:proof='7';break; case 6:proof='6';break; case 7:proof='5';break; case 8:proof='4';break; case 9:proof='3';break; case 10:proof='2';break; }
if(certid.substr(17, 1) != proof) { return
false; }
}
mm = mm -1; var prevTS18 = new Date(gyear18, gmonth, gdate,0,0,0); var ageTs = new Date(yy,mm,dd,0,0,0)
return
true; 
}
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