在javascript中动态创建具有属性的对象

I know how to create simple object and add dynamically properties to it. object = new Object(); object.someproperty = "";

我知道如何创建简单对象并为其添加动态属性。 object = new Object(); object.someproperty =“”;

However, I'm having hardtime creating dynamically something like this: (in javascript)

但是,我很难动态创建这样的东西:(在javascript中)

var datasets = {
        "usa": {
            label: "USA",
            data: [[1988, 483994], [1989, 479060], [1990, 457648], [1991, 401949], [1992, 424705], [1993, 402375], [1994, 377867], [1995, 357382], [1996, 337946], [1997, 336185], [1998, 328611], [1999, 329421], [2000, 342172], [2001, 344932], [2002, 387303], [2003, 440813], [2004, 480451], [2005, 504638], [2006, 528692]]
        },        

        "uk": {
            label: "UK",
            data: [[1988, 62982], [1989, 62027], [1990, 60696], [1991, 62348], [1992, 58560], [1993, 56393], [1994, 54579], [1995, 50818], [1996, 50554], [1997, 48276], [1998, 47691], [1999, 47529], [2000, 47778], [2001, 48760], [2002, 50949], [2003, 57452], [2004, 60234], [2005, 60076], [2006, 59213]]
        },
   .......................
      .............(more...)       
    };

2 个解决方案

#1

dataset[country] = {label: countryName, data: theDataObject};

with

var country = 'usa';
var countryName = 'USA';
var theDataObject = [[1988, 483994], [1989, 479060], [1990, 457648], [1991, 401949], [1992, 424705], [1993, 402375], [1994, 377867], [1995, 357382], [1996, 337946], [1997, 336185], [1998, 328611], [1999, 329421], [2000, 342172], [2001, 344932], [2002, 387303], [2003, 440813], [2004, 480451], [2005, 504638], [2006, 528692]];

This is the JSON format.

这是JSON格式。

dataset.usa.label = 'USA';

or dataset.usa.label = countryName; // etc

或dataset.usa.label = countryName; //等

And :

dataset['usa']

is equal to

等于

dataset.usa

which is equal to

等于

dataset[country]

when the country variable is 'usa'.

当国家变量是'美国'时。

#2

Using the JSON notation as you demonstrate should work. It's just a matter of figuring out your syntax.

在演示时使用JSON表示法应该可行。这只是一个弄清楚语法的问题。

The notation allows you to create pretty complex structures in one statement:

该表示法允许您在一个语句中创建非常复杂的结构:

var continent = {
  name: "North America",
  countries: [
    { name: "USA",
      states: ['AL', 'AK', 'AZ', ... ]
    },
    { name: "Canada",
      states: ['Ontario', 'Quebec', ... ]
    }    
  ]
}

And so on.

等等。

By the way, this also allows you to use the following shorthand for creating blank Objects:

顺便说一下,这也允许您使用以下速记创建空白对象:

var myObj = {};

#1

dataset[country] = {label: countryName, data: theDataObject};