Understand Mutability in JavaScript
Автор: Rolex
Загружено: 2026-01-13
Просмотров: 7
Ever wondered what really happens inside your computer when you create and mutate variables in JavaScript?
In this video, we break down the concept of mutability and immutability, explore the difference between primitive types and object types, and explain why you can still modify objects declared with const.
Topics Covered:
What is mutability in JavaScript?
Difference between let and const
Why primitives are immutable
Why objects and arrays are mutable
How variables act as pointers in memory
Best practices for using const and let
By the end of this video, you’ll understand:
Why reassigning a primitive doesn’t actually change its value
Why const prevents pointer reassignment but not object mutation
How JavaScript handles memory references for variables
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