对数字数组进行排序，以使空值排在最后

本文介绍了对数字数组进行排序，以使空值排在最后的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个像这样的数组:

I have an array like this:

var arr = [5, 25, null, 1, null, 30]

使用此代码从低到高对数组进行排序，这就是输出所显示的内容:

Using this code to sort the array from low to high, this is what's displayed as the output:

null null 1 5 25 30

null null 1 5 25 30

arr.sort(function (a, b) { return a - b; };

但是，我希望最后显示空值，如下所示:

However, I would like the null values to be displayed last, like this:

1 5 25 30 null null

1 5 25 30 null null

我查看了对数组进行排序空值始终排在最后并尝试了此代码，但是输出仍然与第一个相同-空值排在最前:

I had a look at Sort an array so that null values always come last and tried this code, however the output is still the same as the first - the null values come first:

arr.sort(function (a, b) { return (a===null)-(b===null) || +(a>b)||-(a<b); };

推荐答案

您可以先按null而不是数字进行排序.

You can first sort by not null and then by numbers.

var arr = [5, 25, null, 1, null, 30] arr.sort(function(a, b) { return (b != null) - (a != null) || a - b; }) console.log(arr)