When Should You Reach for JavaScript?

The Basics

Closures let a function keep access to variables from its outer scope even after that scope has finished executing.

When It Actually Makes Sense

JavaScript is the only language that runs natively in every web browser, with no compilation or plugin required. The event loop is what lets single-threaded JavaScript handle asynchronous operations without blocking. The right call usually depends on your project's scale, team, and real needs — not just a tool's popularity.