Скачать или смотреть How to Preserve Scroll Position When Navigating Back in React

Learn how to maintain scroll position when returning to a previous page in your React application, including functionality for a 'Back' button and practical code solutions.
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Preserving Scroll Position When Navigating Back in React

If you've ever built a React application that utilizes navigation, you may have encountered the challenge of maintaining the user's scroll position when they navigate back to a previous page. This is especially common when using the 'Back' button functionality in a header. Let’s explore how you can achieve this in an organized manner, ensuring a seamless user experience without losing context from where the user came from.

The Challenge

You have a multi-page application with a 'Back' button implemented, allowing users to return to the previous page easily. However, when they click this button, the application unintentionally scrolls to the top or does not return to the exact scroll position they left. This issue often arises when navigating to pages that use the scroll-to-top functionality, which resets the scroll position to (0, 0). How can we better handle this situation?

Understanding Scroll Behavior

The basic intention behind scroll behavior is as follows:

When a user clicks a link to navigate to another page, they might be viewing a specific portion of that page.

Upon returning to the previous page, it's preferable for the user's view to return to the exact point they left off, instead of restarting from the top of the page.

To achieve this, we can persist the scroll position using the sessionStorage API.

Step-by-Step Solution

Let’s break down how to implement the solution effectively.

1. Store the Scroll Position

First, we need to save the user's current scroll position before they navigate away from the page. This can be done in your component when the user clicks the link to navigate to the new page.

1.1 Implementing Storage Function

In your LastRecordsCard component, define a function to capture and store the scroll position:

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1.2 Modify the Link

Ensure that this function executes when the link is clicked by updating your link component as follows:

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2. Restore the Scroll Position

After storing the scroll position, the next step is to restore it when the user returns to the previous page.

2.1 Using useEffect Hook

In your PageHeader component, use the useEffect hook to read the stored scroll position and scroll to that position:

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

3. Preserve Desired Behavior

The combination of the steps above allows you to maintain typical behavior for scrolling to the top when the page loads while preserving the scroll position when navigating back. You give users context where they'd left off seamlessly.

Conclusion

By adopting this strategy to manage scroll positions using sessionStorage, your users will enjoy a much more intuitive navigation experience without feeling disoriented when they hit the 'Back' button. This implementation ensures users can pick up from where they left off, fostering a smoother interaction with your React application.

Next time you’re faced with the scroll position dilemma, remember this approach! With just a few lines of code, you can significantly enhance user experience in your applications.