JavaScript Scope

From the understanding, JavaScript Scope is divided into three scope

1. Global Scope

Variables declared outside any function are in the global scope and can be accessed anywhere in the code

2. Function Scope

Variables declared within a function are only accessible inside that function.

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3. Block scope

Variables declared with let or const inside a block are only accessible within that block.

You can get a idea from above explanation by getting it easier we can see a example of a Scope

Here I have declared globalScope variable three times you may ask that we can’t create a const name twice then now you created three times?

Based on the scopes I have declared it
you can Trace the code and compare with output so you may get a idea

OUTPUT: