js中通过身份证号判断性别(倒数第二位奇数->男，偶数->女)

//通过身份证号，判断性别
var str2 = '110123199810103726';
var num = str2.charAt(16);
//console.log(num);
if(num%2==0){
  console.log('女');
}else{
  console.log('男');
}