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Delay Async Function Execution

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Introduction

In this lab, we will explore how to delay the execution of an asynchronous function in JavaScript. By using the sleep function and returning a Promise, we can put a part of the async function to sleep for a certain amount of time, allowing for better control and management of the code's execution. Through practical examples, we will learn how to effectively implement this technique in real-world scenarios.

Skills Graph

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How to Delay Execution of an Async Function in JavaScript

To delay the execution of an asynchronous function in JavaScript, you can use the sleep function below, which returns a Promise that resolves after a certain amount of time. Here's an example of how to delay the execution of part of an async function using sleep:

const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));

async function sleepyWork() {
  console.log("I'm going to sleep for 1 second.");
  await sleep(1000);
  console.log("I woke up after 1 second.");
}

To use this function, simply call sleepyWork() and the console will log the messages with a 1 second delay between them.

Summary

Congratulations! You have completed the Delay Async Function Execution lab. You can practice more labs in LabEx to improve your skills.

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