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Joining two or more arrays by using concat

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.

By using concat we can add elements to an existing array.

Let us start with adding or joining two arrays. We have created two arrays , one is our script array and other one is browsers array. We will join these two arrays by using concat function.

Here is the code

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

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

Found anything wrong or wants to improve the code by adding more features? Post your short comment here or use the Forum



Further readings
Declaring array in JavaScript
Displaying elements of an array by looping through
join():Displaying elements of an array using join() function
sort():Sorting of elements of an array using function
length:Length property to get the total number of elements in an array
reverse():Reversing the elements of an array
pop():Removeing last element of an array by using pop()
shift():Removeing first element of an array using shift()
push():Adding elements to array using push()
unshift():Adding elements to array using unshift()
splice():Add replace remove elements from an array using splice()
split():Creating array by splitting string variable
toString: To join all elements and create a string
concat: To join two or more arrays to a single array
slice: To return element from an array with starting and ending positions
Two Dimensional Array: Adding and displaying elements
searching for matching element inside an array by using indexOf function
All elements of the array separated by comma
searching from the end of the array for matching element by using lastindexOf function


sophal25-10-2010
how to write code to defend user input only number in java script?
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