Question 1

What is JSFlow?

Accepted Answer

JSFlow is a free JavaScript Runtime Visualizer that helps understand how JavaScript Engine processes synchronous and asynchronous code through visualization of Event Loop, Call Stack, Promises, and Web APIs.

Question 2

Is JSFlow free to use?

Accepted Answer

Yes, JSFlow is completely free and requires no account registration. You can use it immediately in your browser at jsflow.info

Question 3

What features does JSFlow support?

Accepted Answer

JSFlow supports Event Loop visualization, Call Stack tracking, Async/Await analysis, Promise lifecycle, Microtask vs Macrotask differentiation, step-by-step execution, and real-time code analysis.

JSFlow

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