Welcome to the learn-js.org interactive JavaScript tutorial. Whether you are an experienced programmer or not, this website is intended for everyone who wishes to learn the JavaScript programming language. Just click on the chapter you wish to begin from, and follow the instructions. Good luck!

learn-js.org is a free interactive JavaScript tutorial for people who want to learn JavaScript, fast.

learn-js.org is a free interactive JavaScript tutorial for people who want to learn JavaScript, fast.

In JavaScript, functions are a very important feature of the program, and especially the fact that they can access local variables of a parent function (this is called a closure). There are two ways to define functions in JavaScript - named functions and anonymous functions.

Splicing arrays in JavaScript removes a certain part from an array to create a new array, made up from the part we took out. For example, if we wanted to remove the five numbers from the …

learn-js.org is a free interactive JavaScript tutorial for people who want to learn JavaScript, fast.

JavaScript can hold an array of variables in an Array object. In JavaScript, an array also functions as a list, a stack or a queue. To define an array, either use the brackets notation or the Array object notation:

Like almost every dynamic language, JavaScript is a "duck-typed" language, and therefore every variable is defined using the var keyword, and can contain all types of variables. We can define several types of variables to use in our code:

In this tutorial, we will learn how to use objects as a data structure. The advanced tutorials explain more about object oriented JavaScript. To initialize an object, use curly braces:

Object Oriented JavaScript. JavaScript uses functions as classes to create objects using the new keyword. Here is an example: