JavaScript Array concat() Method

concat()The method is used to merge two or more arrays.

This method does not change the existing array but returns a new array.

Syntax:

array.concat(array1, array2, ..., arrayZ)

Example

var fruits = ["Apple", "Mango", "Banana"];
var numbers = [5,　10,　12,　98,　3];
var arr = fruits.concat(numbers);

The numbers in the table specify the first browser version that fully supports the concat() method:

Method
concat()	1	1	Is	Is	5.5

Parameter	Description
array1, array2, ..., arrayZ	The arrays to be merged

Return Value:	A new Array example
JavaScript Version:	ECMAScript 1

The following code concatenates three arrays:

Example

var　num1　=　[1,　2,　3];
var　num2　=　[4,　5,　6];
var　num3　=　[7,　8,　9];
var　nums　=　num1.concat(num2,　num3);

The following code adds three values to an array:

Example

var　alpha　=　['a',　'b',　'c'
var　alphaNumeric　=　alpha.concat(1,　2,　[3,　4,　5]);