JS前后端实现身份证号验证代码解析

const weight = [7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2];//十七位数字本体码权重
const validate = ['1','0','X','9','8','7','6','5','4','3','2'];//mod11,对应校验码字符值

function getValidateCode(id17){
 let sum = 0;
 let mode = 0;
 [...id17].forEach((elem,i) => {
  sum=sum+parseInt(elem)*weight[i];
 });
 mode = sum % 11;
 return validate[mode];
}
console.log("该身份证验证码："+ getValidateCode("14230219700101101"));//该身份证验证码：3

public class Id18 {
 int[] weight={7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2};//十七位数字本体码权重
 char[] validate={ '1','0','X','9','8','7','6','5','4','3','2'};//mod11,对应校验码字符值  
 
 public char getValidateCode(String id17){
   int sum = 0;
   int mode = 0;
   for(int i = 0; i < id17.length(); i++){
     sum=sum+Integer.parseInt(String.valueOf(id17.charAt(i)))*weight[i];
   }
   mode = sum % 11;
   return validate[mode];
 }
 
 public static void main(String[] args){
   Id18 tes t= new Id18();
   System.out.println("该身份证验证码："+test.getValidateCode("14230219700101101"));//该身份证校验码：3
 }
}