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Скачать или смотреть How to Retrieve Book Properties on Click in React

  • vlogize
  • 2025-09-28
  • 0
How to Retrieve Book Properties on Click in React
Get book properties of element on click in Reactjavascriptreactjsreact context
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Описание к видео How to Retrieve Book Properties on Click in React

Discover how to effectively pass parameters in React and open a book info panel on click. Learn tips for creating interactive components easily!
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This video is based on the question https://stackoverflow.com/q/63572273/ asked by the user 'Uriel' ( https://stackoverflow.com/u/13886927/ ) and on the answer https://stackoverflow.com/a/63572302/ provided by the user 'Vignesh Murugan' ( https://stackoverflow.com/u/2742724/ ) 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: Get book properties of element on click in React

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.
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How to Retrieve Book Properties on Click in React: A Simple Guide

In the world of React, building interactive components is a fundamental skill every developer should hone. One common scenario you might encounter is needing to display details related to list items, such as books in this case, upon a user's click. In this guide, we will explore a specific problem and provide a clear, step-by-step solution.

The Problem: Capturing Book Details on Click

You have a React component that renders a list of books using the map() function. You want each book's title and author to be displayed dynamically when a user clicks on that specific book. However, you’re facing a frustrating issue: your openBook function is only displaying the title and author of the last item in the list. Not only that, but the function runs as soon as the component mounts, rather than waiting for a click event.

Understanding the Code

Here’s a breakdown of your initial code structure for clarity:

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

In this code, onClick={openBook(book.title, book.author)} immediately invokes the openBook function upon rendering, which is not the intended behavior.

The Solution: Correctly Passing Parameters on Click

To fix this issue, you need to ensure that the openBook function is only called when the user actually clicks on the book item, rather than immediately when the component is rendered. This can be accomplished using an arrow function.

Here's How to Do It:

Change your onClick event handler to use an arrow function:

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

Breakdown of the Changes:

Using () =>: Wrapping the openBook call in an arrow function (() =>) ensures that the function execution is deferred until the click event occurs. This way, it doesn't execute during the map process, preventing the issue where the last book's details are always displayed.

Maintaining Context: This allows you to pass the specific book.title and book.author for the item clicked, ensuring that the right information is displayed.

Conclusion

With this simple fix, you've successfully modified the click handler in your list of books. Now, when a user clicks on a particular book, the openBook function is invoked correctly with the corresponding title and author passed in as parameters.

This approach not only simplifies your code but also enhances user interaction within your React components. Keep experimenting with React, and you'll soon discover just how powerful and flexible this library can be!

Feel free to reach out in the comments if you have any questions or need further clarification on the implementation process!

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