JavaScript await fetch

Using await with the fetch function in JavaScript allows you to make asynchronous HTTP requests and wait for the response before proceeding with further code execution.

By utilizing the async/await syntax, you can pause the execution of an asynchronous function until the promise returned by fetch is fulfilled or rejected. This approach provides a cleaner and more readable way to handle responses and errors, as well as perform tasks such as parsing JSON or checking response statuses.

The syntax for using await with fetch is as follows:

async function fetchData() {
  try {
    const response = await fetch(url, options);
    // Handle the response
  } catch (error) {
    // Handle the error
  }
}

Remember to mark the enclosing function as async to allow the use of await within it. This pattern ensures that the code execution waits for the fetch request to complete before moving on to the next steps.

How to Use Fetch with async/await

To use the fetch function with async/await, you can follow these steps:

1. Declare an asynchronous function using the async keyword.
2. Within the asynchronous function, use the await keyword before the fetch function to pause the execution and wait for the response.
3. Use the returned Response object to process the response.

Here’s an example that demonstrates the usage of fetch with async/await:

async function fetchData() {
  try {
    const response = await fetch('https://jsonplaceholder.typicode.com/posts/1');
    if (!response.ok) {
      throw new Error('Request failed with status: ' + response.status);
    }
    const data = await response.json();
    console.log(data);
  } catch (error) {
    console.log('Error:', error);
  }
}

fetchData();

Output:

Note: the actual output will depend on the specific API you use and the data it returns.

Comment if you have any doubts or suggestions on this Js await topic.

Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.

OS: Windows 10

Code: HTML 5 Version