Javascript - Array sort() Method

Description

The sort() method sorts the array items.

By default, the sort() method sorts the values as strings in alphabetical and ascending order.

You can provide a "compare function" to implement the ordering among elements.

This method changes the original array.

Syntax

array.sort(compareFunction)

Parameter Values

Parameter	Require	Description
compareFunction	Optional.	A function that defines an alternative sort order.

The function should return a negative, zero, or positive value, depending on the arguments.

Return

The Array object, with the items sorted

Example

Sort an array:

Demo

var myArray = ["XML", "Json", "Database", "Mango"];
console.log( myArray );/* www . j a  v a2  s . c  om*/

myArray.sort();
console.log( myArray );

//Sort numbers in an array in ascending order:

var points = [4, 10, 11, 5, 25, 10];
console.log( points );

points.sort(function(a, b){return a-b});
console.log( points );

//Sort numbers in an array in descending order:

var points = [4, 10, 1, 5, 25, 10];
console.log( points );

points.sort(function(a, b){return b-a});
console.log( points );

//Get the highest value in an array:
var points = [40, 100, 1, 5, 25, 10];
console.log( points );

points.sort(function(a, b){return b-a});
console.log( points[0] );

//Get the lowest value in an array:

var points = [40, 100, 1, 5, 25, 10];
console.log( points );

points.sort(function(a, b){return a-b});
console.log( points[0] );

//Sort an array alphabetically, and then reverse the order of the sorted items (descending):

var myArray = ["XML", "Json", "Database", "Mango"];
console.log( myArray );

myArray.sort();
myArray.reverse();
console.log( myArray );