JavaScript is the main programming language of the web that makes pages interactive.
JavaScript runs in the browser and also on the server (with Node.js). It’s dynamic and event-driven, meaning it reacts to user actions like clicks, typing, or scrolling.
If HTML is like the structure of a building, CSS is the paint and decoration, then JavaScript is the electricity that makes lights turn on or buttons actually work.
TypeScript
TypeScript is an enhanced version of JavaScript that adds “data types” to make code safer and easier to maintain.
TypeScript was created by Microsoft, and it compiles back to plain JavaScript so it can run anywhere. The main benefit is catching errors early, before the code even runs.
If JavaScript is like writing free-form notes, TypeScript is like writing with strict rules—clearly marking what’s a number, text, or date—so things stay organized and mistakes are reduced.