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Скачать или смотреть How to Properly Use Destructuring Props Assignment with ClassName in React

  • vlogize
  • 2025-09-20
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How to Properly Use Destructuring Props Assignment with ClassName in React
Must use destructuring props assignment in classNametypescriptcypresseslint config airbnb
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Описание к видео How to Properly Use Destructuring Props Assignment with ClassName in React

Learn how to improve your React component's className property using destructured props assignment. Fix common mistakes and follow best practices.
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This video is based on the question https://stackoverflow.com/q/62599105/ asked by the user 'Tomasz Waszczyk' ( https://stackoverflow.com/u/2856360/ ) and on the answer https://stackoverflow.com/a/62599408/ provided by the user 'maioman' ( https://stackoverflow.com/u/2417031/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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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.

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Enhancing Your React Component Class Names with Destructuring Props Assignment

When developing applications in React, especially with TypeScript and applying the Airbnb ESLint standard, you might run into issues with how class names are assigned in your components. One common scenario involves using destructured props in the className property of a button component. In this guide, we'll explore a typical mistake many developers make in this area and show you the correct way to handle it.

The Problem: Improper String Interpolation

Let's start with a typical example. Suppose you have a button component where you want to dynamically assign a class name using props. You might initially write your code like this:

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

In this snippet, the className property seems fine at first glance, but let's break down what it actually produces. The output for the className may end up looking something like this:

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

Why is this a Problem?

The issue here is the use of the + operator in the string interpolation. This could potentially lead to formatting issues in your CSS as it introduces an unwanted space within the class attribute.

The Solution: Correcting String Interpolation

To resolve this problem, you'll want to eliminate the + and concatenate the strings correctly. The corrected class assignment should look like this:

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

Breaking It Down

Remove the + Operator: Using a simple interpolation eliminates the additional space that was being introduced into the CSS class name.

Direct Concatenation: By using template literals, you're able to seamlessly combine static strings with dynamic content (from props in this case) without additional characters or spaces.

Conclusion

Using destructuring props assignment correctly in the className is crucial for maintaining clean and functional code. By changing your assignment to the method outlined above, you'll ensure that your components work with the desired class names.

For those using tools like Cypress for testing, maintaining clean class names is even more crucial for improving the readability and maintainability of your code. Follow these best practices to optimize your development workflow and enhance your React applications' user interface.

If you have further questions or would like assistance with JavaScript or TypeScript complexities, feel free to ask!

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