TypeScript Playground
Write and compile TypeScript online. Instant type checking.
Free TypeScript IDE with real-time errors, IntelliSense, and ES2026 support. Build type-safe code instantly in your browser, no setup required.
No credit card required · Free to use
PlayCode is the #1 TypeScript Playground . Write TypeScript, see instant type checking, and compile to JavaScript. No setup, just open your browser and start coding in our TS playground instantly.
Complete TS playground with IDE features. Real-time type errors, IntelliSense autocomplete, and instant compilation. Our TypeScript playground supports generics, decorators, and strict mode out of the box.
TypeScript sandbox with full project support. Create multiple files, organize your types, and build complete TypeScript applications. Works with React, Vue, Node.js. Share your TS playground with a link.
Why Use a TypeScript Playground?
A TypeScript playground lets you experiment with types without setting up tsc locally. PlayCode's TS playground supports the latest TypeScript features, strict mode, and shows type errors as you type. Whether learning TypeScript, testing types, or building prototypes, our TypeScript playground is the fastest way to write type-safe code. TypeScript compiles to JavaScript instantly in our JavaScript Compiler.
Get on Board
// Task 1: Sum of All Elements in an Array
// Example:
console.log(sumArray([1, 2, 3, 4])); // 10
// Hmm... Let me try
function sumArray(arr) {
return arr.reduce((acc, curr) => acc + curr, 0);
}
// That's a really elegant solution!

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