Variable Environment in JavaScript

Variable Environment in JavaScript

Today, let me guild you on Variable Environment in JavaScript: Hoisting and Temporal Dead Zone, var, let, const, function declarations, function expressions, and arrow functions.

An Execution Context (EC) always contains three parts — a variable environmentthe scope chain in the current context, and this keyword.

In JavaScript, we have a mechanism called hoisting. And hoisting basically makes some types of variables accessible/usable in the code before they are actually declared in the code.

Variables are magically lifted or moved to the top of their scope for example, to the top of a function.

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