Скачать или смотреть Preventing Login Credentials from Showing in URL Parameters in React JS

Learn how to secure your React JS login form by preventing usernames and passwords from appearing in URL parameters.
---
This video is based on the question https://stackoverflow.com/q/62242097/ asked by the user 'Vidhya' ( https://stackoverflow.com/u/10482430/ ) and on the answer https://stackoverflow.com/a/62242320/ provided by the user 'oreopot' ( https://stackoverflow.com/u/2772118/ ) 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: Login credentials showing in url parameters in react js

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

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Preventing Login Credentials from Showing in URL Parameters in React JS

Creating a secure login system is a crucial part of any web application. However, you might face a common issue, especially as a beginner in React JS: your login credentials, like the username and password, appearing in the URL after form submission. This guide aims to help you understand why this happens and how to solve it effectively.

Understanding the Problem

When you submit a form in HTML, the default behavior is to send the form data through the URL as parameters. This can lead to sensitive information, such as usernames and passwords, becoming visible in the URL. For security reasons, this is something you generally want to avoid, especially in a login form.

Example Scenario

In your case, you have implemented a simple login form where users enter their email and password. Here's a simplified version of your code:

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

With this form setup, upon submitting, the credentials would be displayed in the URL. Fortunately, this can be easily resolved.

Solution: Using e.preventDefault()

To prevent the default behavior of the form submission—which sends data through the URL—you simply need to use the e.preventDefault() method in your form submission handler. Here’s how you can implement this in your ValidateUser method:

Step-by-Step Instructions

Locate Your ValidateUser Method: Find the method responsible for handling form submissions (often called ValidateUser in your case).

Update Your Method: Modify the method to include e.preventDefault(). This stops the form from submitting the traditional way.

Here’s an example update to your method:

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

Test Your Form: Run your application and try logging in again. This time, the credentials should not appear in the URL.

Why This Works

The e.preventDefault() line halts the browser from executing the default submit action.

This provides you an opportunity to manage how you handle the form data securely, such as sending it directly to an API without exposing it in the URL.

Conclusion

Securing user information during the login process is essential for any web application. By ensuring that your login credentials do not show in the URL, you're taking an important step toward user safety. The use of e.preventDefault() in your form submission handler is a simple yet effective solution to keep sensitive data secure.

By following this guide, you can enhance the security of your login forms in React JS, allowing for a safer user experience. Happy coding!