关于#javascript#的问题，请各位专家解答！

let arr1= [{name:'zhangsan',age:14},{name:'lisi',age:18}] //这是后台返回的数据

let arr2= [{name:'张三',zname:'zhangsan'}，{name：李四,zname:lisi}] //后代返回的对照表

变成

[{name:zhangsan,age:14,title:'张三'}，{name:'lisi',age:18,title:'李四'}]

你题目的解答代码如下：（如有帮助，望采纳！谢谢! 点击我这个回答右上方的【采纳】按钮）

let arr1= [{name:'zhangsan',age:14},{name:'lisi',age:18}] //这是后台返回的数据

let arr2= [{name:'张三',zname:'zhangsan'},{name:'李四',zname:'lisi'}] //后代返回的对照表

let obj = {};
arr2.forEach(function(v, i){
    obj[v.zname] = v;
});
arr1.forEach(function(v, i){
    v.title = obj[v.name].name;
});
console.log(arr1);

这种方法 速度会更快

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