What are the Benefits of Asynchronous Functions in JavaScript?
Oct 19, 2024 pm 10:37 PM
What are Asynchronous Functions in JavaScript?
Asynchronous functions in JavaScript allow code to execute without blocking the main thread. This is useful for tasks that take time to complete, such as making a network request or reading a file from disk.
Async Functions
The async keyword is used to create asynchronous functions. Async functions return a Promise object. When the function completes execution, the Promise resolves with the result of the function.
<code class="js">async function myFunction() {
// ...
}</code>
Await Keyword
The await keyword can be used inside async functions to wait for a Promise to resolve. This pauses execution of the function until the Promise is resolved.
<code class="js">async function myFunction() {
const data = await fetch('myData');
// ...
}</code>
Benefits of Asynchronous Functions
Asynchronous functions can greatly improve the performance of your code by allowing you to execute long-running tasks without blocking the main thread. They also make it easier to write and manage asynchronous code.
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