Lab

How Closure Works

medium
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Step Explanation

Understand what is happening first

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Execution Visualizer

Watch memory, stack, queues, and output

Execution Visualizer

live
JavaScript reads the outer function declaration and stores it in memory. No code inside outer() runs yet — it is just defined.

Call Stack

empty
∅

Call stack is empty

Memory

1 variable

Heap Memory

outerfn→ refnew
"function"
Console Output

awaiting output...

varfnobjarrclosure

Code Preview

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Code

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JavaScript
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