javascript中相同对象名的总和 [英] Sum of same object name in javascript

问题描述

嗨朋友我是javascript的初学者我如何总结相同的n对象名称对应的值并将结果推送到新数组。看这是示例对象

Hi friends I'm beginner for javascript how i sum same n no's of object name corresponding value and push the result to new array.see this is sample object

var obj_1 = {'deliver'：10，'due'：11，'team_name'：'UK'};
var obj_2 = {'deliver'：10，'due'：11，'team_name'：'US'};
var obj_nth = {'deliver'：10，'due'：11，'team_name'：'UK'};

但我希望此输出 [英国：{'已交付'：20，'到期'：22}，美国：{'已交付'：10，'到期'：11}] ，所以请帮助我下一步做什么

but i expect this output [UK:{'delivered':20,'due':22},US:{'delivered':10,'due':11}],so please help me what i'll do next

推荐答案

你可以先创建对象数组，然后 reduce（）返回一个对象。

You can first create array of objects and then reduce() to return one object.

var obj_1 ={'delivered':10,'due':11,'team_name':'UK'};
var obj_2 ={'delivered':10,'due':11,'team_name':'US'};
var obj_nth ={'delivered':10,'due':11,'team_name':'UK'};

var result = [obj_1, obj_2, obj_nth].reduce(function(r, e) {
  if(!r[e.team_name]) {
    r[e.team_name] = {delivered:0,due:0}
  }
  r[e.team_name].delivered += e.delivered
  r[e.team_name].due += e.due
  return r
}, {})

console.log(result)

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