<ul><li>JavaScript variables can be declared using var, let, or const, with differences in scope, hoisting, reassignment, and more.</li><li>1. Scope: var is function-scoped, while let and const are block-scoped.</li><li>2. Hoisting: var is hoisted and initialized, while let and const are hoisted but not initialized.</li><li>3. Redeclaration & Reassignment: var allows both redeclaration and reassignment, let allows reassignment but not redeclaration, and const allows neither.</li><li>4. Temporal Dead Zone (TDZ): Variables declared with let and const have a Temporal Dead Zone where they cannot be accessed before declaration.</li></ul>

Js interview #1 : var, let, and const in JavaScript – What's the Difference?

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