Troubleshooting useParams in React: Retreiving Values from Hash URLs

Learn how to effectively extract `access_token` and `state` parameters from hash URLs in your React application with simple fixes and tips!
---
This video is based on the question https://stackoverflow.com/q/74264457/ asked by the user 'Arsene Wenger' ( https://stackoverflow.com/u/17175848/ ) and on the answer https://stackoverflow.com/a/74264660/ provided by the user 'mochaccino' ( https://stackoverflow.com/u/18244921/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: UseParams not picking value properly

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/licensing
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/by-sa/4.0/ ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/by-sa/4.0/ ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Troubleshooting useParams in React: Extracting Values from Hash URLs

If you’ve been working with React and react-router-dom, you might have encountered a scenario where you are unable to extract URL parameters properly using useParams. This can be particularly frustrating when working with URLs that include hash fragments, as traditional URL parameter extraction methods might not work as expected.

The Problem

You may find yourself in a situation like this:

[[See Video to Reveal this Text or Code Snippet]]

With a URL like this:

[[See Video to Reveal this Text or Code Snippet]]

In this case, trying to use useParams to extract access_token and state will not yield the desired results because useParams focuses on parameters that appear in the route path and does not handle hash fragments.

The Solution

Fortunately, there’s a straightforward way to extract these values using the built-in URL and URLSearchParams APIs in JavaScript. Here's how to do it:

Step 1: Create a URL Object

Start by creating a URL object with your current URL. This will help in parsing the different components of the URL, including the hash.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Extract the Hash and Use URLSearchParams

Utilize the URLSearchParams constructor to parse the hash. Since the hash contains your parameters, you’ll need to slice off the - character, which is the start of the hash.

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Retrieving the Values

Now, to fetch the state and access_token values, you can use the get method of URLSearchParams:

[[See Video to Reveal this Text or Code Snippet]]

Full Code Example

Here’s the entire implementation in context:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By leveraging the URL and URLSearchParams APIs, you can easily extract parameters from hash fragments in URLs without relying on useParams. This method is a robust solution and is applicable for various situations where URL hash fragments are involved.

Key Takeaways

useParams is not suitable for hash segments in URLs.

Use the URL and URLSearchParams APIs for parsing and extracting hash values.

Slice off the - from the hash when using URLSearchParams.

By following these steps, you should be able to successfully retrieve values such as access_token and state from your URLs with ease. Happy coding!

Видео Troubleshooting useParams in React: Retreiving Values from Hash URLs канала vlogize