在 JavaScript 中创建关联数组

Question

I wasn't sure what to call it for the title,

How can I create an array like this in JavaScript?

var per_kg_list = new Array(
    '03749' => '3.000',
    '03750' => '4.000',
    '03751' => '5.000',
);

Answer 1

You can have an array of objects containing key-value pairs, like this:

var per_kg_list = [
    {'03749': '3.000'},
    {'03750': '4.000'},
    {'03751': '5.000'}
];

Alternatively, you can have an object containing key-value pairs, like this:

var per_kg_list = {
    '03749': '3.000',
    '03750': '4.000',
    '03751': '5.000'
};

Answer 2

In JavaScript, array doesn't allow to use string as indexes. You may consider to use dictionary:

var per_kg_list = {};
per_kg_list['03749'] = '3.000';
per_kg_list['03750'] = '4.000';
per_kg_list['03751'] = '5.000';

Answer 3

有人回答了用值初始化 JavaScript 数组的最佳方法：

var per_kg_list = {'03749': '3.000', '03750': '4.000', '03751': '5.000'};

Answer 4

You can use associative array notations. They are just JavaScript objects with properties:

var set = new Object();
set['Document language'] = 'HTML5';
set['Styling language'] = 'CSS3';
set['JavaScript library'] = 'jQuery';
set['Other'] = 'Usability and accessibility';