Mastering Generator Functions in JavaScript

Introduction

In this lab, we will delve into the concept of generator functions in JavaScript. We will explore how they differ from regular functions and learn how to identify them using the isGeneratorFunction() function. Through practical examples and exercises, you will gain a solid understanding of how generator functions work and their potential applications in your code.

Skills Graph

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Checking if a Value is a Generator Function

To check if a value is a generator function, you can use the isGeneratorFunction function. To begin practicing coding, open the Terminal/SSH and type node.

Here's how the isGeneratorFunction function works:

It checks if the given argument is a generator function by using Object.prototype.toString() and Function.prototype.call().
If the result of the check is '[object GeneratorFunction]', then the value is a generator function.

Here's the code for the isGeneratorFunction function:

const isGeneratorFunction = (val) =>
  Object.prototype.toString.call(val) === "[object GeneratorFunction]";

And here are some examples of how to use it:

isGeneratorFunction(function () {}); // false
isGeneratorFunction(function* () {}); // true

Summary

Congratulations! You have completed the Value Is Generator Function lab. You can practice more labs in LabEx to improve your skills.

Value Is Generator Function

Introduction

Skills Graph

Checking if a Value is a Generator Function

Summary

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