Visual Labs
Interactive visualizers that show you exactly what your code is doing — step by step, in real-time.
Javascript Playground
A robust coding environment to execute Javascript, visualize terminal output, and safely debug logic.
Event Loop Visualizer
Visualize the Call Stack, Web APIs, Microtask Queue, and Macrotask Queue in real-time.
Promise Execution
See how promise chains execute, resolve, reject, and how errors propagate through catch blocks.
Closure Visualizer
Understand lexical scoping and see how closures store variables in memory with live state.
Change Detection
Visualize how Angular traverses the component tree during an application tick to check for changes.
RxJS Streams
Understand operators like map, switchMap, and filter visually by seeing values emit over time.
Dependency Injection
See how the injector hierarchy resolves tokens, providers, and handles root vs component providers.