Vue.js 3: Handling AJAX request timeouts with Fetch API and custom error messages
I'm migrating some code and I've been struggling with this for a few days now and could really use some help. I'm working on a Vue.js 3 application where I'm trying to implement AJAX calls using the Fetch API. I've set up a simple function to fetch data from an external API, but I want to gracefully handle request timeouts. Currently, I'm not receiving any specific error when a request takes too long; instead, it just hangs indefinitely. I want to be able to show a custom error message to the user if the request exceeds a certain timeout period. Here’s the code I have so far: ```javascript async fetchData(url) { try { const controller = new AbortController(); const timeoutId = setTimeout(() => controller.abort(), 5000); // 5 seconds timeout const response = await fetch(url, { signal: controller.signal }); clearTimeout(timeoutId); if (!response.ok) { throw new Error(`HTTP error! status: ${response.status}`); } const data = await response.json(); this.data = data; } catch (error) { if (error.name === 'AbortError') { this.errorMessage = 'Request timed out. Please try again.'; } else { this.errorMessage = `An error occurred: ${error.message}`; } } } ``` I've implemented the timeout logic using the `AbortController`, but I'm not sure if I'm handling the error state properly. When the timeout occurs, the catch block does catch the `AbortError`, but the user doesn’t see the error message until the timeout completes, which can take up to 5 seconds. Is there a better approach to let the user know the request is taking too long, or to provide immediate feedback while the AJAX call is in progress? Also, are there any Vue.js best practices regarding error handling that I should keep in mind? What's the best practice here?