React - Component Full Screen (with height 100%)

ghz 6months ago ⋅ 133 views

I'm stuck with displaying a React component named "home" that take 100% of the height of my screen. Whatever I use CSS or React inline style it doesn't work.

In the example below, html, body and #app are set to height: 100% in CSS. For .home I used inline style (but whatever I used CSS or inline style is the same): enter image description here The issue seems to come from <div data-reactroot data-reactid='1'> that is not set with height: 100%.

If I hacked it with Chrome developer tool, it's work: enter image description here

So what is the proper way to display a full height component in React ?

Any help is welcome :)

Answers

To ensure a React component named "home" takes up 100% of the height of the screen, you need to ensure that every parent element, including html, body, and the container element (#app in your case), has a height of 100% as well. Here’s a step-by-step approach to achieve this properly:

Step 1: Ensure HTML and Body Height

Firstly, make sure that html and body elements have a height of 100% in your CSS. This ensures that they occupy the full viewport height:

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

Step 2: Container Element (#app) Height

Ensure that the container element (#app) also takes up the full height of the viewport. This is crucial because React will render your components inside #app.

#app {
    height: 100%;
    display: flex; /* If using flexbox for layout */
    flex-direction: column; /* Adjust as per your layout needs */
}

Step 3: Home Component Height

Inside your React component (Home or whatever it's named), ensure that you apply styles correctly to make it take up full height. You can use inline styles or CSS modules depending on your preference:

Option 1: Inline Styles

const Home = () => (
    <div style={{ height: '100%', backgroundColor: 'lightblue' }}>
        {/* Content of your Home component */}
    </div>
);

Option 2: CSS (using CSS modules)

If you prefer using CSS files, you can define a class with height: 100% and apply it to your component:

import styles from './Home.module.css'; // Assuming you're using CSS modules

const Home = () => (
    <div className={styles.fullHeight}>
        {/* Content of your Home component */}
    </div>
);

In your CSS module file (Home.module.css):

.fullHeight {
    height: 100%;
    background-color: lightblue; /* Example background color */
}

Notes:

  • Flexbox: If you are using flexbox for layout (display: flex on #app), ensure you set flex: 1 on the container of the Home component or use flex-grow: 1 to make it take up remaining space.

  • Viewport Units: Alternatively, you can also use viewport units (vh) directly in your CSS or inline styles (height: 100vh;) to ensure full viewport height.

  • Testing: Always inspect your elements in the browser developer tools to ensure that all parent elements up to html have their height set correctly. Sometimes styles from parent components or global CSS can override your specific styles.

By following these steps, you should be able to display your React component (Home in your case) to take up 100% of the screen height reliably. Adjust the layout and styles based on your specific design requirements and the overall structure of your React application.

html, body, #app, #app>div {
  height: 100%
}

这将确保整个链条height: 100%

#javascript