Mutable and Immutable Functions in JavaScript: A Comprehensive Guide

Mutable Data:

Mutable data refers to data that can be directly modified after its creation. This means you can change the original value of the data without creating a new instance. Think of it like a physical object - you can directly change its state.

Immutable Data:

Immutable data, on the other hand, cannot be changed after its creation. Every modification creates a new copy of the data with the desired changes, leaving the original untouched. Imagine it like a photograph - you can create copies with edits, but the original remains unchanged.

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