How does one sort a multi dimensional array by multiple columns in JavaScript?

Question

I\'ve been working on this problem all day without a good solution. Google has been little help as well. I have a script that needs to accept a two dimensional array with

Answer 1

There are already good answers to this question, would like to add a short functions to handle multiple key array sort inspired solution of https://stackoverflow.com/users/2279116/shinobi.

// sort function handle for multiple keys
const sortCols  = (a, b, attrs) => Object.keys(attrs)
    .reduce((diff, k) =>  diff == 0 ? attrs[k](a[k], b[k]) : diff, 0);

Let's take an following example

const array = [
    [1, 'hello', 4],
    [1, 'how', 3],
    [2, 'are', 3],
    [1, 'hello', 1],
    [1, 'hello', 3]
];

array.sort((a, b) => sortCols(a, b, { 
   0: (a, b) => a - b, 
   1: (a, b) => a.localeCompare(b), 
   2: (a, b) => b - a
}))

The output would be following.

[ 1, "hello", 4 ]​
[ 1, "hello", 3 ]​
[ 1, "hello", 1 ]​
[ 1, "how", 3 ]
​[ 2, "are", 3 ]