Variables hold a wide variety of information temporarily. The JavaScript data types that can be stored in a variable include: JavaScript variables can hold a few other kinds of data, but these are by ...

Every developer eventually has a moment when JavaScript objects “click.” These structures hold data, define behavior, and connect everything from variables to complex web apps. Learning how objects ...

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, ...

Developers who have built any size Website have had this problem: when you need to change one of your brand’s colors it’s no easy feat, requiring a risky search and replace or hunting down every ...