细细领会一下这是个什么程序的代码

gender_price.js

var contact = [
    { nickname: 'coco', mobile: '13151185930', gender: '女' },
    { nickname: 'F**k', mobile: '18651941714', gender: '女' }
  ];
var price = [
    { mobile: '13151185930', price: 1024 },
    { mobile: '18651941714', price: 1722 }
  ];
 
contact.forEach(function(c){
  price.forEach(function(p){
    if(c.mobile === p.mobile) {
      c.price = p.price;
    }
  });
});
 
console.log('contact: ', contact);