如何根据javascript对象的属性对javascript对象进行排序，指定属性 [英] How to sort javascript objects based on their properties, specifying the property

问题描述

对于类似问题，SO上有很多答案，它们都描述了如何实现自定义排序函数来对javascript对象数组进行排序。

There are lots of answers on SO for similar questions, which all describe how to implement a custom sort function to sort an array of javascript objects.

但是，我我想知道是否有可能实现一个更抽象的自定义排序，它允许我传递我想要它排序的对象的属性名称。这可能会让我不得不一遍又一遍地实现非常相似的功能。

However, I was wondering if it might be possible to implement a more abstract custom sort that would allow me to pass the name of the property of the objects on which I want it to sort. This might save me having to implement very similar functions over and over again.

所以如果我有一个像这样的对象构造函数：

So if I had an object constructor like:

function Car(mph, cc) {
    this.maxSpeed = mph;
    this.engineSize = cc;
}

然后代替实现两个排序函数：

then instead of implementing two sort functions:

function sortCarsOnMaxSpeed(a, b) { return a.maxSpeed - b.maxSpeed; }
function sortCarsOnEngineSize(a, b) { return a.engineSize - b.engineSize; }

我可以使用某种泛型函数，例如：

I could have some sort of generic function such as:

function sortObjectsOnProperty(a, b, property) {
    return a[property] - b[property];
}

但自定义排序似乎只占用2个参数。

but the custom sort seems to only take 2 arguments.

有关如何做到这一点的任何建议吗？

Any suggestions as to how I could do this?

非常感谢。

推荐答案

您需要编写一个带有属性名称并返回比较器的函数：

You need to write a function that takes a property name and returns a comparator:

function createComparator(property) {
    return function(a, b) {
        return a[property] - b[property];
    };
}

您可以这样使用它：

arr.sort(createComparator("maxSpeed"));

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