合并两个匹配id的数组 [英] Merge two arrays matching an id

问题描述

我有两个数组，比如

var members = [{docId: "1234", userId: 222}, {docId: "1235", userId: 333}];
var memberInfo = [{id: 222, name: "test1"}, {id: 333, name: "test2"}];

我需要将它合并到以编程方式匹配用户ID的单个数组

I need to merge this to a single array programatically matching the user ids

最后一个数组应该像

var finalArray = [{docId: "1234", userId: 222, name: "test1"}, {docId: "1235", userId: 333, name: "test2"}]

有没有更简洁的方法来做到这一点，我在我的应用程序中有下划线库，但我找不到一个干净的方法来实现这个

Is there a cleaner way to do this, I have underscore library in my app, but I couldn't find a clean method to achieve this

推荐答案

使用下划线的解决方案：

A solution using underscore:

var finalArray = _.map(members, function(member){
    return _.extend(member, _.omit(_.findWhere(memberInfo, {id: member.userId}), 'id'));
});

1. _。map


2. 使用 _。findWhere


3. 
   
4. _。延伸 会员信息

1. _.map across the members
2. find the matching member info using _.findWhere
3. _.omit the id key from the matching member info
4. _.extend the member with the member info

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