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Learn how to extract a unique user ID from a URL and display it in a text field using the `MERN` stack. Follow our simple guide for an effective solution!
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How to Extract and Display a User ID in a Text Field Using the MERN Stack

In the world of web development, especially when using the MERN stack (MongoDB, Express.js, React.js, Node.js), one of the common tasks a developer might encounter is extracting user-specific data from URLs. For instance, you might want to grab a unique user ID that's part of a URL and display it in a text field on your web application. In this post, we will walk you through the process, addressing the challenge and providing a clear solution.

The Challenge

If you are building a website using the MERN stack, you might come across a situation where you have a URL structured like this:

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

In this URL, the portion 5f539fbf8e7b1c16806a863f serves as a unique identifier for a user. Your objective is to extract this ID from the URL and display it in a text field or label within your application.

The Solution

There are various ways to achieve this, but we will explore a straightforward approach using JavaScript. This method is both efficient and easy to understand. Here’s how you can do it:

Step-by-Step Breakdown

Access the URL: First, make sure you have the URL from which you want to extract the user ID.

Split the URL: Utilize JavaScript’s split() method to break down the URL into its components.

Extract the ID: Once the URL is split, you can easily extract the user ID.

Example Code

Here’s a simple snippet that demonstrates how to extract the user ID and store it in a variable:

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

Rendering in React

Once you have the user ID extracted, you can display it in a text field or label in your React component. Here's a simple example:

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

Conclusion

By following the above steps, you can efficiently extract a unique user ID from a URL within your MERN stack application and display it as needed. This technique is useful not only for user IDs but can be adapted to other types of data you may find in URLs.

I hope this guide helps you understand how to put the extracted user ID in a text field effectively! Happy coding!