What are advanced iterator patterns in JavaScript?

What are advanced iterator patterns in JavaScript?

Advanced iterator patterns in JavaScript include concepts like generator functions, async iterators, and custom iterators. Would you like to explore one of these in detail?

Can you explain generator functions?

Sure! Generator functions are defined using the function* syntax and allow you to yield multiple values over time, pausing and resuming execution. This is useful for handling asynchronous operations or creating iterable sequences.

How do async iterators differ from regular iterators?

Async iterators work with promises and allow you to iterate over data that is fetched asynchronously, using the for-await-of loop. This is particularly useful for handling streams of data.

Can you give an example of a custom iterator?

Absolutely! A custom iterator can be created by defining a next() method in an object. This method returns an object with value and done properties, allowing you to control the iteration process.