Customizing Parent Style from a Child Component in React
There might be scenarios where a child component needs to customize the style of its parent element. You can achieve it using a ref. A ref is simply a function in React that allows you to access a DOM element when it is attached to the DOM.
It's important to note that directly modifying the style of a parent component from a child is not possible through standard CSS. While the :has() CSS selector can conditionally style a parent based on a child, it must still be applied from the parent component itself, not the child.
Here’s a practical example where a child component removes padding from its parent element:
const Child = () => { return ( <div ref={(childElement) => { if (childElement) { childElement.parentElement!.style.padding = "0"; // Remove padding from the parent } }} > I am the child </div> ); }; const Parent = () => { return ( <div> <hr> <h3> How Does This Work? </h3> <ol> <li> <p><strong>What is ref?</strong></p> <ul> <li> ref is a React prop that allows you to access a DOM element after it is mounted (added to the DOM).</li> </ul> </li> <li> <p><strong>When Does It Run?</strong></p> <ul> <li>The ref function runs when the DOM element is attached.</li> </ul> </li> </ol> <hr> <p>This approach is quick and works for specific use cases where you need to make minor adjustments to parent styles from a child component.</p>
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