自定义属性添加到现有对象

Question

我有以下的物体看起来像这样：

{ dateCreated: Fri Mar 18 2016 16:36:12 GMT+0400 (MUT), 
lastUpdated: Fri Mar 18 2016 16:36:12 GMT+0400 (MUT), 
users: [ '56ebdaad275a88df234a4480' ], 
    viewOnlyUsers: [], 
__v: 0, 
    owner: '56ebdaad275a88df234a4480', 
editUrl: 'e7f25e3d-be77-4cfa-a928-6af05f06ec44', 
viewUrl: '2669ba21-0e3b-4ac0-a886-74e3fe217af4?view', 
_id: '20c84dde-56b7-43ba-9fd3-510c1d24ba0f' } 

我如何自定义属性添加到该对象在Javascript？

我已经试过

workspaces[test] = 'test'; 

但它不工作。

Answer 1

添加引号为属性名：workspaces['test'] = 'test';

然而，这是太细：

var test = 'myProp'; 
var workspaces = {}; // your object 
workspaces[test] = 'test';