Javascript对象数组获得单个值 [英] Javascript Array of objects get single value

问题描述

假设我有一系列对象：

var employees=[]
employees[0]={name:"George", age:32, retiredate:"March 12, 2014"}
employees[1]={name:"Edward", age:17, retiredate:"June 2, 2023"}
employees[2]={name:"Christine", age:58, retiredate:"December 20, 2036"}
employees[3]={name:"Sarah", age:62, retiredate:"April 30, 2020"}

是否有一个数组函数可以让我获得一个属性一个数组，
例如：

Is there an array function that will allow me to get one property as an array, for example:

namesArray = employees.reduceToProperty('name'); // none existent function i made up!

// should return ["George","Edward","Christine","Sarah"]

我知道如何通过循环获得所需的结果，我只是希望存在一个数组函数或函数组合，可以在一行中执行此操作。

I know how get the desired result with a loop, I am just hoping for an array function or combination of functions exist that can do this in one line.

推荐答案

var names = employees.map(function(i) {
  return i.name;
});

names 现在是一个包含<的数组code> name - 对象的属性。

names is now an array containing the name-properties of the objects.

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