从对象列表创建对象成员列表 [英] Create list of object members from object list

问题描述

假设我有一个像这样的对象列表：

Assume I have a list of objects like so:

var list = [
    { date: '22/9/2016', status: 1, id: '11111' },
    { date: '23/9/2016', status: 1, id: '22222' },
    { date: '24/9/2016', status: 1, id: '33333' }
];

我想创建上面列表中所有对象的ID列表，以便我最终得到：

I would like to create a list of the ids of all the objects in the above list, so that I end up with:

var idList = ['11111', '22222', '33333'];

显然，我可以遍历列表并手动构建idList。
是否有另一种方法可以通过本机JS，angularJS或其他库来实现。

Obviously, I could iterate through the list and build the idList manually. Is there an alternative way of doing this through either native JS, angularJS, or perhaps another library.

手动迭代列表并不是一个很大的开销，我只是想确保我不会忽略JS / angularJS的功能，而不是为我这样做。

Manually iterating through the list isn't a big overhead, I just want to ensure I'm not ignoring functionality of JS / angularJS that would do this for me instead.

推荐答案

您可以使用数组映射

You can use Array map

var list = [
    { date: '22/9/2016', status: 1, id: '11111' },
    { date: '23/9/2016', status: 1, id: '22222' },
    { date: '24/9/2016', status: 1, id: '33333' }
];
var idList = list.map(item => item.id );
console.log(idList);

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