Javascript Memory Management

#javascript #programming #webdev

When the javascript engine starts executing the code it will store variables inside of the memory. for storing data, runtime uses two different memory:

Stack memory
Heap memory

Javascript only can communicate with stack memory.

Before explaining the differences around these memories I should explain the data types in javascript. In javascript, we have two different data types:

Primitive types: primitive types stored directly in the stack
- String, Number, Boolean, Null, Undefined, Symbol, BigInt

Reference types: Stored in the heap and accessed by reference from Stack
- Arrays, Functions, Objects

For maximum optimization in the memory space javascript engine uses something called garbage collector. it will clean the value immediately when a value is not reachable via a variable(label).

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