Iterators & Generators

This video tutorial explains iterators and generators in JavaScript, both part of the ES6 standard. Iterators are advanced loops that can be paused, while generators are functions that can yield multiple values. The tutorial includes examples of creating an iterator to iterate through an array of names and a generator to yield names and generate IDs. The video concludes with a promise of a practical application using iterators in the next video.

What is the primary purpose of iterators in JavaScript?

• To pause and resume loops

• To manage memory allocation

• To create infinite loops

• To execute functions asynchronously

In the iterator example, what is the role of the 'next' function?

• To terminate the iteration

• To initialize the iterator

• To return the next value in the sequence

• To reset the iterator

What does the 'done' property signify in an iterator?

• The iteration is complete

• The iteration has encountered an error

• The iteration is in progress

• The iteration is paused

How do generators differ from iterators in terms of functionality?

• Generators are faster than iterators

• Generators cannot be paused

• Generators can yield multiple values

• Generators can only yield strings

What symbol is used to define a generator function in JavaScript?

• An asterisk (*)

• A hash (#)

• A dollar sign ($)

• An ampersand (&)

In the generator example, what does the 'yield' keyword do?

• It resets the generator

• It initializes the generator

• It returns a value and pauses the function

• It stops the function execution permanently

What is the purpose of the 'while true' loop in the ID generator example?

• To reset the ID counter

• To pause the generator

• To continuously generate IDs

• To create a finite sequence of IDs