Javascript基于值对键值对象进行排序 [英] Javascript Sort key value pair object based on value

问题描述

我有一个像下面这样的对象。尝试根据值按升序重新排列。与Javascript数组排序方法类似。

I have an object like below. Trying to rearrange it in ascending order based on value. Similar to Javascript array sort method.

    var masterList = {
    "1": "google",
    "2": "yahoo",
    "3": "msn",
    "4": "stackoverflow",
    "5": "github",
    "6": "jsfiddle",
    "7": "amazon",
    "8": "ebay"
}

请告诉我更好的解决方案...

Please let me know the better solution...

推荐答案

JavaScript对象没有订单。即使大多数浏览器按照相同的顺序迭代创建属性，也无法保证，因此对象不支持排序。

JavaScript objects have no order. Even though most browsers do iterate in the same order the properties were created, there's no guarantee, so sorting is not supported on objects.

有关详细信息，请参阅此处： JavaScript是否保证对象属性订单？

See here for more info: Does JavaScript Guarantee Object Property Order?

您可能还对 John Resig必须说明的内容感兴趣问题。

You might also be interested in what John Resig has got to say on the matter.

如果你需要一个可排序列表，你必须将它存储为一个对象数组：

If you need a sort-able list, you'll have to store it as an array of objects:

var masterList = [
    { key: 1, val: "google" },
    { key: 2, val: "yahoo" },
    { key: 3, val: "msn" },
    { key: 4, val: "stackoverflow" },
    { key: 5, val: "github" },
    { key: 6, val: "jsfiddle" },
    { key: 7, val: "amazon" },
    { key: 8, val: "ebay" }
];

然后，要对它们进行排序，只需使用常规数组的 sort 方法：

Then, to sort them, just use the regular array's sort method:

masterList = masterList.sort(function (a, b) {
    return a.val.localeCompare( b.val );
});

这是小提琴： http://jsfiddle.net/ASrUD/

这篇关于Javascript基于值对键值对象进行排序的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！