Add JS abort fetch article

blog_posts/js-abort-fetch.md

@@ -0,0 +1,26 @@
+---
+title: "Tip: Abort a fetch request in JavaScript"
+type: story
+tags: javascript,function
+expertise: intermediate
+author: chalarangelo
+cover: blog_images/cancel-typographer.jpg
+excerpt: Aborting a fetch request in JavaScript is a common problem. Here's how to handle it correctly.
+firstSeen: 2022-05-15T05:00:00-04:00
+---
+
+The Fetch API is nowadays the de facto way to send asynchronous requests in JavaScript. This is in part due to the fact that the `fetch()` method accepts a multitude of useful options. One of these is the `signal` option, which can be used to abort a request. To create a valid value for this option, you can use `AbortController.signal` after creating a new instance of `AbortController`. Then, you can use `AbortController.abort()` to cancel the request at any time.
+
+```js
+// Create the AbortController
+const controller = new AbortController();
+const { signal } = controller;
+
+// Perform the request
+fetch('https://my.site.com/data', { signal }).then(res => console.log(res));
+
+// Abort the request
+controller.abort();
+```
+
+This is particularly useful in scenarios where a request takes too long or the response is no longer needed. You can see a common React use-case for this in the [useFetch hook](https://www.30secondsofcode.org/react/s/use-fetch).