JavaScript

Basic idea

Dynamically typed, prototype-based, single-threaded event-loop language born in Netscape (Eich, 1995). Standardised as ECMAScript; ubiquitous on browsers, Node.js, and edge runtimes.

Key facts

• Year / creator: 1995, Brendan Eich at Netscape; standard ECMAScript.
• Paradigm: multi-paradigm; first-class functions, prototypes, classes (sugar), async.
• Typing: dynamic, weak; many implicit conversions.
• Engines: V8 (Chrome/Node), SpiderMonkey, JavaScriptCore.
• Concurrency: single-threaded event loop + async/await + Web Workers.

Siblings

• c
• c 1
• cpp
• Erlang
• Go
• Haskell
• Java
• Lua
• Racket
• risc v
• Rust
• TypeScript
• x86 Assembly