sort outer array based on values in inner array, javascript

Question

I have an array with arrays in it, where I want to sort the outer arrays based on values in a specific column in the inner.

I bet that sounded more than a bit confus

Answer 1

Here is a solution not needing a separate variable to contain the index

var arr = [.....]
arr.sort((function(index){
    return function(a, b){
        return (a[index] === b[index] ? 0 : (a[index] < b[index] ? -1 : 1));
    };
})(2)); // 2 is the index

This sorts on index 2