按属性名称对JavaScript对象进行排序 [英] Sorting a JavaScript object by property name

问题描述

我一直在寻找一段时间，想要一种方法来对这样的Javascript对象进行排序：

I've been looking for a while and want a way to sort a Javascript object like this:

{
    method: 'artist.getInfo',
    artist: 'Green Day',
    format: 'json',
    api_key: 'fa3af76b9396d0091c9c41ebe3c63716'
}

并按名称按字母顺序排序：

and sort is alphabetically by name to get:

{
    api_key: 'fa3af76b9396d0091c9c41ebe3c63716',
    artist: 'Green Day',
    format: 'json',
    method: 'artist.getInfo'
}

我找不到任何可以执行此操作的代码。任何人都可以给我一些帮助吗？

I can't find any code that will do this. Can anyone give me some help?

推荐答案

根据定义， 对象中的键顺序未定义 ，因此您可能无法以面向未来的方式执行此操作。相反，您应该考虑在实际向用户显示对象时对这些键进行排序。无论如何它在内部使用的排序顺序并不重要。

By definition, the order of keys in an object is undefined, so you probably won't be able to do that in a way that is future-proof. Instead, you should think about sorting these keys when the object is actually being displayed to the user. Whatever sort order it uses internally doesn't really matter anyway.

按照惯例，大多数浏览器将按照添加顺序保留对象中键的顺序。所以，你可以这样做，但不要指望它总是有效：

By convention, most browsers will retain the order of keys in an object in the order that they were added. So, you could do this, but don't expect it to always work:

function sortObject(o) {
    var sorted = {},
    key, a = [];

    for (key in o) {
        if (o.hasOwnProperty(key)) {
            a.push(key);
        }
    }

    a.sort();

    for (key = 0; key < a.length; key++) {
        sorted[a[key]] = o[a[key]];
    }
    return sorted;
}

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