如何有效填充具有许多静态键/值对的Javascript对象文字？ [英] How to fill a Javascript object literal with many static key/value pairs efficiently?

问题描述

创建Javascript对象的典型方法如下：

The typical way of creating a Javascript object is the following:

var map = new Object();
map[myKey1] = myObj1;
map[myKey2] = myObj2;

我需要创建一个这样的地图，其中键和值都是字符串。我有一个很大但是静态的一对对要添加到地图中。

I need to create such a map where both keys and values are Strings. I have a large but static set of pairs to add to the map.

有没有办法在Javascript中执行类似的操作：

Is there any way to perform something like this in Javascript:

var map =  { { "aaa", "rrr" }, { "bbb", "ppp" } ... };

或者我必须为每个条目执行类似的操作：

or do I have to perform something like this for each entry:

map["aaa"]="rrr";
map["bbb"]="ppp";
...

基本上，剩余的Javascript代码将遍历此地图并根据提取值以'在运行时'已知的标准。如果这个循环作业有更好的数据结构，我也很感兴趣。我的目标是最小化代码。

Basically, remaining Javascript code will loop over this map and extract values according to criterias known 'at runtime'. If there is a better data structure for this looping job, I am interested too. My objective is to minimize code.

推荐答案

JavaScript的对象文字语法，通常用于实例化对象（严重的是，没有人使用 new Object 或 new Array ），如下所示：

JavaScript's object literal syntax, which is typically used to instantiate objects (seriously, no one uses new Object or new Array), is as follows:

var obj = {
    'key': 'value',
    'another key': 'another value',
     anUnquotedKey: 'more value!'
};

对于数组，它是：

var arr = [
    'value',
    'another value',
    'even more values'
];

如果您需要对象内的对象，那也没关系：

If you need objects within objects, that's fine too:

var obj = {
    'subObject': {
        'key': 'value'
    },
    'another object': {
         'some key': 'some value',
         'another key': 'another value',
         'an array': [ 'this', 'is', 'ok', 'as', 'well' ]
    }
}

这种能够实例化静态数据的便捷方法是导致 JSON数据格式的原因。

This convenient method of being able to instantiate static data is what led to the JSON data format.

JSON有点挑剔，键必须用双引号括起来，以及字符串值：

JSON is a little more picky, keys must be enclosed in double-quotes, as well as string values:

{"foo":"bar", "keyWithIntegerValue":123}

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