In the world of JavaScript, generators are a powerful feature that allow you to create functions that can pause and resume their execution. This unique capability opens up a whole new realm of possibilities, enabling you to write more efficient and expressive code.
In this article, we’ll dive deep into the world of generators, exploring their syntax, use cases, and practical examples.
What are Generators?
Generators are a special kind of function that can pause their execution and resume later, maintaining their state across multiple calls.
This behavior is achieved through the use of the yield keyword, which allows the generator to pause and return a value, while also preserving its internal state. Here's a simple example of a generator function:
function* simpleGenerator() {
yield 'First value';
yield 'Second value';
yield 'Third value';
}
const gen = simpleGenerator();
console.log(gen.next().value); // Output: 'First value'
console.log(gen.next().value); // Output: 'Second value'
console.log(gen.next().value); // Output: 'Third value'
console.log(gen.next().value); // Output…