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 ...

JavaScript is now the foundation of contemporary online development, enabling everything from sophisticated web apps and ...

TypeScript extends JavaScript with static type checking, preventing runtime errors by catching mistakes during development.

If you buy something from a Verge link, Vox Media may earn a commission. See our ethics statement. The app works with bite-sized puzzles and quizzes, so you can ...