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(Fix) Update solution.md for task "Function in if" #3787

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(Fix) Update solution.md for task "Function in if" #3787

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11 changes: 9 additions & 2 deletions 1-js/06-advanced-functions/03-closure/5-function-in-if/solution.md
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Original file line number Diff line number Diff line change
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The result is **an error**.
With `'use strict'`:

The function `sayHi` is declared inside the `if`, so it only lives inside it. There is no `sayHi` outside.
An error occurs: `ReferenceError: sayHi is not defined`.
The function `sayHi` is declared inside the block (`if`), so it only exists within that block.
In strict mode, functions declared inside a block have block-level scope, similar to variables declared with let or const.

Without `'use strict'`:

The function `sayHi` is accessible outside the block. This is because, in non-strict mode (and older JavaScript specifications before ES6), functions declared inside blocks like `if`, `for`, etc.,
are hoisted to the nearest function or global scope, making them accessible outside the block.