Understanding Iterators and Generators in JavaScript

Understanding Iterators and Generators in JavaScript

Get to know the applications of Iterators and Generators in JavaScript. Iterators improve efficiency by letting you consume a list of items, one at a time, similar to a stream of data. Generators are a special kind of function capable of pausing the execution. Invoking a generator allows producing data in chunks (one at a time) without storing it in a list first.

Get to know the applications of Iterators and Generators in JavaScript

Have you come across a situation where you need to loop through a list, but the task took so much time, that you gave up on it?

Well, I have experienced incidents as such while carrying out computationally heavy operations in my applications. Sometimes it affects the stability of the program by crashing and hanging in the middle of the process.

So in this article, I will be discussing two elegant ways to improve efficiency while performing such tasks with JavaScript.

Iterators improve efficiency by letting you consume a list of items, one at a time, similar to a stream of data.

Generators are a special kind of function capable of pausing the execution. Invoking a generator allows producing data in chunks (one at a time) without storing it in a list first.

These concepts might be confusing at first, but as we explore how they work, the underlying benefits will be clear for you. Besides, it’s also important to understand that Iterators and generators are interconnected.


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