How to use the Head component to modify the document head in Next.js



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In Next.js, the Head component is used to modify the document head, allowing you to dynamically update the title, meta tags, and other elements in the <head> of your HTML document. This is useful for improving SEO, handling social media sharing, and managing other aspects of the document metadata.

Here's an example of how you can use the Head component in a Next.js application:

  1. Import the Head component:

    Import the Head component at the top of your React component or page file.

    jsx
    import Head from 'next/head';

  2. Use the Head component within your component:

    Place the Head component within the return statement of your React component or page file.

    jsx
    import Head from 'next/head';

const MyPage = () => {
  return (
    <div>
      <Head>
        <title>My Page Title</title>
        <meta name="description" content="This is a description of my page." />
        {/* Add more meta tags or other head elements as needed */}
      </Head>
      {/* Rest of your component content */}
      <h1>Hello, Next.js!</h1>
    </div>
  );
};

export default MyPage;

  3. Dynamically update head elements:

    You can dynamically update the content of the Head component based on the component's state or props.

    jsx
    import Head from 'next/head';
import { useState } from 'react';

const DynamicTitlePage = ({ dynamicTitle }) => {
  const [pageTitle, setPageTitle] = useState(dynamicTitle);

  const handleButtonClick = () => {
    // Update the title dynamically
    setPageTitle('New Page Title');
  };

  return (
    <div>
      <Head>
        <title>{pageTitle}</title>
      </Head>
      {/* Rest of your component content */}
      <h1>{pageTitle}</h1>
      <button onClick={handleButtonClick}>Change Title</button>
    </div>
  );
};

export default DynamicTitlePage;

This is a basic example, and you can customize it further based on your specific needs. The Head component allows you to modify various elements within the document head, including titles, meta tags, links, and more. Refer to the Next.js documentation for more details and advanced usage: Next.js Head Component.

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