按第二个值对2D数组进行排序 [英] Sort a 2D array by the second value

问题描述

我有一个数组，我想按数字字段排序而不是名字。

I have an array and I want to sort by the number field not the name.

var showIt = [
  ["nuCycleDate",19561100],
  ["ndCycleDate",19460700],
  ["neCycleDate",0],
  ["nlCycleDate",0]
];

谢谢

推荐答案

你可以用比较函数提供 sort 。

you can provide sort with a comparison function.

showIt.sort(function(a,b){
    return a[1] - b[1];
});

a 和 b 是您阵列中的项目。 sort期望返回值大于零，零或小于零。第一个表示 a 在 b 之前，零表示它们相等，最后一个选项表示 b 首先。

a and b are items from your array. sort expects a return value that is greater than zero, zero, or less than zero. the first indicates a comes before b, zero means they are equal, the last option means b first.

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