Phase 4 · JavaScript

Topics

Generators

Part of the Frontend Developer Roadmap.

Summary

Functions (`function*`) that can pause and resume execution using `yield`, producing a sequence of values lazily instead of all at once. Generators are useful when values should be produced lazily, allowing consumers to pause iteration and request the next value only when needed.

How to Learn This

  • 1Write a simple generator that yields a sequence of numbers. Validate your understanding by applying it in a small practical example.
  • 2Use a `for...of` loop to consume a generator's values. Verify the behavior with realistic data and handle the failure or empty state as well.
  • 3Learn how generators power async iteration and libraries like Redux-Saga.
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