List Of Javascript Async Await 使い方 Article
Introduction
JavaScript is one of the most popular programming languages, and it’s used to create dynamic and interactive web pages. One of the key features of JavaScript is its ability to work asynchronously, which means that it can perform tasks without blocking the main thread. This is where async/await comes in – it’s a new feature in JavaScript that simplifies working with asynchronous code.What is Async/Await?
Async/await is a new way to write asynchronous code in JavaScript. It’s built on top of Promises, which are a way to represent asynchronous operations. Async/await makes it easier to write and read asynchronous code, and it’s becoming increasingly popular among developers.How to Use Async/Await
The syntax for async/await is relatively simple. You start by defining an async function, which is a function that returns a Promise. Within that function, you can use the await keyword to wait for other Promises to complete before continuing with the rest of the code.Benefits of Async/Await
There are several benefits to using async/await in your JavaScript code. First, it simplifies the code and makes it easier to read and understand. Second, it makes error handling easier, since you can use try/catch blocks to catch errors. Finally, it makes debugging easier, since you can use the debugger to step through the code.Examples of Async/Await
Here’s an example of using async/await to load data from an API:async function loadData() {
try {
const response = await fetch('https://api.example.com/data');
const data = await response.json();
console.log(data);
} catch (error) {
console.error(error);
}
}
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