Earn these JavaScript certs to demonstrate mastery of the most in-demand skills for the world’s most-used programming language.

The concept of a virtual Document Object Model (DOM) was first introduced by the JavaScript framework React in 2013 and is still used today, both by React and other frameworks like Vue.js. The idea is ...

JavaScript DOM manipulation is the backbone of creating dynamic, interactive web pages. From selecting elements to handling events and fetching data, mastering these skills transforms static HTML into ...

Love it or loathe it, JSX has made a big impact on front-end engineering. Here's a code-first intro to the HTML-based JavaScript templating language. JSX is a way to write HTML inside of JavaScript, ...

Finishing AP Computer Science Principles is a major milestone, but the leap from block-based coding to real-world JavaScript can feel daunting. Fortunately, the landscape has evolved: Code.org has ...