What are the key differences between let and var

Question

With the help of proper code programming, can you tell me what the key differences between "let" and "var" are?

Answer 1

Feature	var	let
Scope	Function-scoped. Accessible within the function, even outside blocks.	Block-scoped. Accessible only within the block where it is declared.
Hoisting	Hoisted and initialized with undefined. Can be accessed before declaration.	Hoisted but not initialized. Accessing before declaration throws a ReferenceError.
Re-declaration	Allows re-declaration within the same scope.	Does not allow re-declaration within the same scope.
Global Object Property	Becomes a property of the global object (window in browsers).	Does not become a property of the global object.
Usage Recommendation	Older JavaScript (ES5) code, but prone to bugs due to scope issues.	Preferred for modern JavaScript (ES6+) due to better scoping rules and safety