Exploring JavaScript has never been easier. Live feedback as you type, with per-line results makes it super clear what your code is doing.
With RunJS you have access to Node.js and Browser APIs, including full DOM access. This gives you a level of versatility that's not possible in the Node REPL or the Chrome console.
TypeScript support and support for modern JavaScript syntax enables you to write cutting edge code.
Experiment with new libraries and frameworks
Save and reuse code snippets
Generate code, ask questions, get explanations