Web Reference: May 5, 2023 · Mutability refers to data types that can be accessed and changed after they've been created and stored in memory. Immutability, on the other hand, refers to data types that you can't change after creating them – but that you can still access in the memory. If you are a web developer you have seen the terms mutable and immutable objects in JavaScript. But what these words mean, and why do they matter? This section will help you understand. In this article, I am going to discuss JavaScript Objects are Mutable with Examples. Please read our previous article where we discussed Call by Value and Call by Reference in JavaScript with Examples.
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