Javascript Array Functions Tutorial

What is an Array

In simple words, Array is a variable which holds multiple values at a time. In this article you will learn how to declare an array in javascript and usage of popular javascript array functions.

Let’s start with declaration

To declare an array using Array constructor .

or Define them in single line

Declare array using literal notation

Javascript Array Functions Tutorial

To test if An Object is a Valid Array

Array.isArray() returns true if an object is an array otherwise false.

Javascript Array Length

Javascript provides a length property, to get the length of an array

Append Values at the end of an Array

Javascript array push() method is used to append one or more values at the end of an array.

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Append Values at the Beginning using Javascript Array unshift

unshift() method is used to append values at the beginning of an array.

Remove First and Last Element using Javascript Array pop and shift Method

pop() method is used to remove last element of an array. shift() method is used to remove first element of an array.

How to Combine Two or More Arrays in Javascript

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

Convert an Array into String using Javascript toString Method

toString() method is used to convert an array into string.

You can also convert array to string using join() method.

I tried to cover, some popular Javascript array methods, if you find any error or if you have any suggestion for improvement. Please comment below.


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