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JavaScript - how to sort array?

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1. Overview

In JavaScript it is possible to sort array in following ways.

2. Sorting array in ascending ordering

In this example numbers are sorted from smallest to biggest - Array sort (Array.prototype.sort) method with ascending ordering has been used.

var array = [5, 2, 3, 1, 4];
array.sort();

console.log(array);

Output:

[ 1, 2, 3, 4, 5 ]

3. Sorting array in ascending ordering with compare function

In this example numbers are sorted from smallest to biggest with compare function.

var array = [5, 2, 3, 1, 4];

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

console.log(array);

Output:

[ 1, 2, 3, 4, 5 ]

4. Sorting array in desscending ordering with compare function

In this example numbers are sorted from biggest to smallest - in this case compare function is necessary.

var array = [5, 2, 3, 1, 4];

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

console.log(array);

Output:

[ 5, 4, 3, 2, 1 ]

5. Sorting array in desscending ordering with reverse method example

In this example numbers are sorted from biggest to smallest - in this case reverse function has been used.

var array = [5, 2, 3, 1, 4];

var result = array.sort()
    .reverse();

console.log(result);

Output:

[ 5, 4, 3, 2, 1 ]
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