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In the world of asynchronous JavaScript programming, the combination of async/await
and try...catch
blocks is a powerful duo that can help you write more robust and error-resilient code.
This article will guide you through the intricacies of using try...catch
blocks within async/await
functions, providing up-to-date code examples and best practices.
Understanding Async/Await
Before diving into try...catch
blocks, let's quickly recap the concept of async/await
. The async
keyword is used to define an asynchronous function, which can pause its execution to wait for a Promise to resolve or reject. The await
keyword is then used within the async
function to pause the execution until the Promise is resolved or rejected.
async function fetchData() {
const response = await fetch('https://api.example.com/data');
const data = await response.json();
return data;
}
In the example above, the fetchData
function is marked as async
, allowing the use of await
to pause the execution until the fetch
Promise resolves and the response data is parsed as JSON.