数组中对象的总和

问题描述

我想创建一个包含多个对象的数组的总和.

I would like to create a sum of an array with multiple objects.

这是一个例子:var array = [{"adults":2,"children":3},{"adults":2,"children":1}];

如何将成人和儿童的总和返回到每个的新变量中?

How do I return the sum of adults and the sum of children into a new variable for each?

谢谢，C.

推荐答案

var array = [{
  "adults": 2,
  "children": 3
}, {
  "adults": 2,
  "children": 1
}];

var val = array.reduce(function(previousValue, currentValue) {
  return {
    adults: previousValue.adults + currentValue.adults,
    children: previousValue.children + currentValue.children
  }
});
console.log(val);

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