Скачать или смотреть Solving the React does not recognize the X prop on a DOM element Warning

Learn how to fix the React warning about unrecognized props on DOM elements by properly managing props in your components, ensuring a smooth development experience.
---
This video is based on the question https://stackoverflow.com/q/66176412/ asked by the user 'Reacting' ( https://stackoverflow.com/u/3424817/ ) and on the answer https://stackoverflow.com/a/66176480/ provided by the user 'DylanSp' ( https://stackoverflow.com/u/5847190/ ) 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: Warning: React does not recognize the X prop on a DOM element

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.
---
Handling React Warnings: Fixing the Unrecognized Prop Issue

If you're working with React, you may eventually encounter a frustrating warning: "React does not recognize the X prop on a DOM element". This is particularly common when you're passing props around in your components, just as our reader has experienced. Let’s break down this problem and explore an effective solution.

What’s the Problem?

In this specific case, the user tries to pass a custom prop, handleMoveAll, to a div element within a React component. Here’s the warning message that appears:

"Warning: React does not recognize the handleMoveAll prop on a DOM element." This occurs because React does not recognize custom attributes on standard HTML elements like <div>, which leads to confusion, especially for developers who are trying to manage their component properties correctly.

Example Code That Triggers the Warning

Here's a simplified version of the code causing the warning:

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

Parent Component

The issue is triggered when MyWrapper is called from its parent component:

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

Understanding the Solution

The solution to this warning involves recognizing that unnecessary props are being passed down to the DOM element. Here's how to manage props effectively:

Step-by-Step Fix

Destructure the Props: First, you want to separate the prop that you don’t want to pass to the DOM (in this case, handleMoveAll) from the other props.

Spread Remaining Props: Next, you’ll only spread the remaining props onto the <div> element.

Here's how your updated MyWrapper component would look:

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

Quick Recap of Changes

Destructure handleMoveAll: By using destructuring, you're ensuring that handleMoveAll is treated as a variable and won't be added to the DOM.

Use ...rest for Other Props: The spread syntax (...rest) means all other props are still passed down, maintaining their behavior without cluttering the DOM.

Conclusion

By following these steps, you manage your props properly, eliminate React warnings, and ensure a clean and efficient rendering of your components. Memory management in React can be tricky, but understanding how to pass props correctly is essential for developing clean, functional code.

Next time you encounter this warning, you'll know just what to do! Happy coding!