What is JavaScript? Engines (V8/SpiderMonkey) & Runtimes (Browser vs Node)
What JavaScript is, how engines execute it, and how Browser vs Node runtimes differ. Write your first tiny programs.
Intro
Goal: Understand what JS is, how engines run it, and how Browser vs Node runtimes differ. You will write tiny, readable programs.
- Engines: V8, SpiderMonkey
- Runtimes: Browser, Node
- First output
What is JavaScript?
JavaScript is a high-level, dynamically typed language standardized as ECMAScript. It powers interactive UIs in browsers and also runs on servers via Node.
All lessons in this course
- What is JavaScript? Engines (V8/SpiderMonkey) & Runtimes (Browser vs Node)
- Setup: Node + npm, Running .js, DevTools Console
- First Program & I/O (console, alerts in browser)