javascript-将新属性推入数组中的对象 [英] javascript - pushing new property to objects that are in an array

问题描述

我有一个数组人，其中包含许多看起来像这样的对象:

I got an array person containing many objects that look like this:

const person = [
{ first: 'firstName', last: 'lastName', year: 1439, passed: 1495 },
 ...
]

我已经计算出该人的寿命:

I have counted how many years the person lived:

const oldest = person.map(x => x.passed - x.year);

每个人的岁月都有新的数组.

Got new array with the years for every person.

现在，我想将此计算的年份作为新的属性年龄推入此数组中的每个人对象.

Now I would like to push this calculated year as a new property age to each person object in this array.

你能帮我吗?

推荐答案

您可以添加新属性

person.forEach(p => p.lifetime = p.passed - p.year);

或映射新的对象数组

persons = person.map(p => ({ ...p, lifetime: p.passed - p.year });

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