How JavaScript works: memory management + how to handle 4 common memory leaks?

JavaScript is a high-level, interpreted programming language that is widely used for web development. Understanding how memory management works in JavaScript is crucial for writing efficient and robust code. Memory leaks can occur when objects are no longer needed but still occupy memory, leading to performance degradation and potential crashes. In this explanation, we will delve into JavaScript’s memory management and discuss four common memory leaks along with their solutions.

JavaScript Memory Management:

JavaScript uses an automatic memory management system called garbage collection to handle memory allocation and deallocation. The garbage collector identifies objects that are no longer referenced by the program and frees up the memory they occupy.

In JavaScript, variables are declared using the var, let, or const keywords. When a variable is assigned an object or a value, JavaScript allocates memory to store that object or value. Memory allocation happens dynamically, and developers do not need to manage memory explicitly.

However, memory leaks can occur when objects are not released correctly, even if they are no longer needed by the program. Here are four common scenarios where memory leaks can occur and how…