What is the output of the following? “`js let x = 10; const fn = () => { let x = 20; return () => x; }; console.log(fn()()); “`

JavaScript Developer Hard

JavaScript Developer — Hard

What is the output of the following? “`js let x = 10; const fn = () => { let x = 20; return () => x; }; console.log(fn()()); “`

Key points

The inner function accesses the x variable declared within its scope.
JavaScript functions create closures that allow inner functions to access variables from outer functions.
The outer x variable with a value of 10 is not accessible inside the inner function.

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