JavaScript Execution Flow Visualizer
Visualize how JavaScript code executes with event loop, call stack, and microtask queue
Enter JavaScript Code
Promise.resolve().then(() => console.log("P1")); Promise.resolve().then(() => { setTimeout(() => { console.log("P2"); Promise.resolve().then(() => console.log("P3")); }, 100) }); setTimeout(() => console.log("T1"), 0);
Run & Visualize
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Call Stack
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Microtask Queue
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Macrotask Queue
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Console Output
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Execution Timeline
Timeline will appear here...