Visual Labs
Interactive visualizers that show you exactly what your code is doing — step by step, in real-time.
JavaScript
Event Loop Visualizer
Visualize the Call Stack, Web APIs, Microtask Queue, and Macrotask Queue in real-time.
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Promise Execution
See how promise chains execute, resolve, reject, and how errors propagate through catch blocks.
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Closure Visualizer
Understand lexical scoping and see how closures store variables in memory with live state.
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