Explore the different types of variables in JavaScript
Exploring Types of variable declaration in Javascript:
var variables
Function scope.
if not initialise then shown undefined value.
Follows hoisting.
Can be reassign value.
let variables
Block scope.
if not initialise then shown undefined value.
Not following hoisting.
Can be reassign value.
const variables
Block scope.
const variable must be initialised.
Not following hoisting.
Cannot be reassign value.
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