Remember we talked about the for of loop, and how it pretty much works with absolutely everything except for objects? Well, it actually works on looping through generators as well.
Let's take a quick look at an example right here:
function* lyrics() {
yield `But don't tell my heart`;
yield `My achy breaky heart`;
yield `I just don't think he'd understand`;
yield `And if you tell my heart`;
yield `My achy breaky heart`;
yield `He might blow up and kill this man`;
}
const achy = lyrics();This lyrics function is just going to yield a line of "My Achy Breaky Heart" every single time that we go through to it. To go through this, we could create a new generator
We see we have achy.next.next.next.next.next.
Over in the console, we have to call achy.next() over and over again for each line, and we don't want to write some sort of recursive function.
You can use the for of loop:
for (const line of achy) {
console.log(line);
}Notice how we're not going to call next anywhere in here. It just logs it all for us.
That's really useful if you've got a generator that has either some hard-coded stuff that you need to loop through, or even better yet, you have a dynamic function that would generate some code for you, or some lines, or some numbers, or some objects.
Whatever type of content it is, you can just use the for of loop to loop right through it, just like it works on arrays, and sets, and maps, and everything else we talked about with the for of loop.