💻 JavaScript Trivia

What's covered

• language origin history
• standardization and ECMAScript
• prototype-based inheritance
• closures and scope
• event loop and concurrency
• DOM manipulation
• browser APIs and web platform
• modules and bundling
• async and promise patterns
• typed arrays and binary data
• Node.js runtime
• JavaScript engines
• tooling and transpilation
• functional programming features

A few JavaScript questions

• In JavaScript, which method converts a JSON string into a JavaScript object?
• Which JavaScript method creates a new array by calling a function on every element of an existing array?
• Which JavaScript keyword is used to declare a block-scoped variable that can be reassigned?
• Which JavaScript method creates a new array by combining all sub-array elements into a single array?

Answers are in the game — questions are drawn fresh each round.

How it works

Pick a topic — any topic you can type — and TrivAI writes the questions, checks them against sources before serving, and fixes them when players report a problem. Answer before the fuse burns out to score double. Every 10 questions you can cash out or keep going, then challenge a friend to the exact same set.