concat in Javascript to add or join two or more arrays or elements to an array

Joining two or more arrays by using concat

var scripts = new Array();
scripts[0] = "PHP";
scripts[1] = "ASP";
scripts[2] = "JavaScript";
scripts[3] = "HTML";

var browsers=new Array();
browsers[0] = "Internet Explorer";
browsers[1] = "FireFox";
browsers[2] = "NetScape";

var both = scripts.concat(browsers);
document.write(both.toString());

The output of above code is here

PHP,ASP,JavaScript,HTML,Internet Explorer,FireFox,NetScape

By using concat function we can create new array by adding two or more arrays. This function concat does not alter any structure of elements used as arguments for creating the new array.

We can use concat to add elements to an existing array. Here is the code.

var new_one = scripts.concat("ie","ff","ns");

document.write(new_one.toString());

The output of above code is

PHP,ASP,JavaScript,HTML,ie,ff,ns

Returning string by joining all elements of an Array
Array Reference How to display elements of an Array

Subscribe to our YouTube Channel here

This article is written by plus2net.com team.

plus2net.com

sophal	25-10-2010
how to write code to defend user input only number in java script?