JavaScript Courses

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All JavaScript courses

Join more than 12 million learners and train up on JavaScript on Udemy. Choose from a wide range of top-rated JavaScript courses. From back-end development to app or website building, we’ve got you covered. Our real-world experts can lead you through hands-on projects to apply your skills.

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Learn more about JavaScript

JavaScript is a text-based computer programming language used to make dynamic web pages. A must-learn for aspiring web developers or programmers, JavaScript can be used for features like image carousels, displaying countdowns and timers, and playing media on a webpage. With JavaScript online classes, you can learn to build interactive web applications, choose the best framework, and work with other programming languages like HTML and CSS.

Frequently asked questions
JavaScript is a curly-braced, dynamically typed, prototype-based, object-oriented programming language. It started as the programming language for the web and is one of the three layers of standard web technologies — the other two being HTML and CSS. JavaScript allows you to create and control content dynamically on a web page without requiring a page reload. Web browsers are able to interpret it, and when triggered by events, modify the HTML and CSS of a web page with dynamic updates. JavaScript also uses asynchronous calls to fetch data from web services in the background. Although it was initially only used in web browsers, JavaScript engines have since been put to use as servers with Node.js, included in desktop application frameworks like Electron, and embedded in phone frameworks like Apache Cordova.