What is maps, reduce, hoisting, strings, var, let, const

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Accepted Answer

Maps, reduce, hoisting, strings, var, let, const are important concepts in JavaScript development.

Maps: Used to transform elements in an array without changing the original array.
Reduce: Used to reduce an array to a single value by applying a function to each element.
Hoisting: Refers to the behavior in JavaScript where variable and function declarations are moved to the top of their containing scope.
Strings: Data type used to represent text in JavaScript.
Var: Declares a variable globally or locally to an entire function regardless of block scope.
Let: Declares a block-scoped variable that can be reassigned.
Const: Declares a block-scoped variable that cannot be reassigned.

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