如何将一个对象数组拆分成多个普通数组，其中每个数组都由一个属性的值填充？

Question

我有一个对象数组如下：

var GOM = [{name:"Kuroko",ability:"misdirection"},
           {name:"Kise",ability:"perfect copy"},
           {name: "Akashi", ability: "emperor's eye"}];

是否可以使用lodash中的某些预定义函数或本机javascript（不是forEach）将其拆分为2个数组。

["Kuroko","Kise","Akashi"] and ["misdirection","perfect copy","emperor's eye"]

我知道我可以这样做：

var names = [];
var abilities = [];
GOM.forEach(function(member){
  names.push(member.name);
  abilities.push(member.ability);
});

但我正在寻找另一种方式。

Answer 1

将map（） ， values（）和unzip（）组合成包装器：

var wrapper = _(GOM).map(_.values).unzip();

然后很容易获取名称：

wrapper.first()
// → [ "Kuroko", "Kise", "Akashi" ]

和能力：

wrapper.last()
// → [ "misdirection", "perfect copy", "emperor's eye" ]

Answer 2

Array.map()适用于此：

 var GOM = [{name:"Kuroko",ability:"misdirection"},{name:"Kise",ability:"perfect copy"},{name: "Akashi", ability: "emperor's eye"}]; var names = GOM.map(function(item) { return item.name; }); var abilities = GOM.map(function(item) { return item.ability; }); alert(names + '\\n' + abilities); 

Answer 3

你拥有的代码很好，但是如果你正在寻找更具“功能性”的东西，那么总会reduce ：

var GOM = [ { name: "Kuroko", ability: "misdirection" },
            { name: "Kise", ability: "perfect copy" },
            { name: "Akashi", ability: "emperor's eye" } ];

var result = GOM.reduce(function(memo, member) {
  memo.names.push(member.name);
  memo.abilities.push(member.ability);
  return memo;
}, { names: [], abilities: [] });

console.log(result.names);
// => [ "Kuroko", "Kise", "Akashi" ]

console.log(result.abilities);
// => [ "misdirection", "perfect copy", "emperor's eye" ]

Answer 4

看起来没有什么比Lodash的两个更短的了：

 var data = [ {name:"Kuroko",ability:"misdirection"}, {name:"Kise",ability:"perfect copy"}, {name: "Akashi", ability: "emperor's eye"} ]; var names = _.pluck(data, 'name'); var abilities = _.pluck(data, 'ability'); alert(JSON.stringify(names, null, 4)); 

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