However, when it comes to creating a "copy to clipboard" button for code snippets that have been processed with Rehype Pretty Code in an MDX-based Next.js application, a specific approach is required. "Copy to clipboard" buttons are an excellent way to improve the accessibility of code snippets, particularly on mobile devices. The final result should look similar to the Copy button for the code snippets on this post (minus the styling). This visitor function should be added to the list of existing Rehype plugins, in the case of Contentlayer, it's the file. To traverse the node tree, we'll use the visit function from the unist-util-visit package. We'll store this text content on the pre node itself. To begin, we need to create a visitor function that traverses the node tree of the content and extracts the unmodified (raw text) content from all code elements nested inside the pre tag. I originally came across this idea on a Twitter thread and slightly adapted the code to fit our use case. This content can then be accessed as props inside our custom MDX component that renders the copy button. We can extract the unstyled code content before the syntax highlighting stage and append it as a property to the code nodes. Thankfully, there's a better way to achieve our objective. However, this approach is inefficient as it would require undoing everything that Rehype Pretty Code has done for us. One potential solution is to parse the code content when copying it, removing all HTML markup. By the time we intend to render the button on the client side, the code content will already be wrapped in various tags necessary for syntax highlighting. Rendering the button in our case presents a challenge since the syntax highlighting is executed on the server side. If you want to improve the discoverability of your Next.js website, I have written an article about adding a sitemap to it: Add a Dynamic Sitemap to Next.js Website Using Pages or App Directory Extracting the code content Let's dive in! Setting upĪs usual, we need to install the required dependencies. In fact, this blog uses the exact functionality we'll be creating, so you can see the result in action. By the end of this post, you'll be able to streamline code sharing and enhance the user experience on your Next.js website. We'll be using Next.js 13+ with the "app" directory enabled. This tutorial will guide you on how to create a "copy to clipboard" button for the code snippets processed with Rehype Pretty Code, a popular Rehype plugin for syntax highlighting in an MDX-based Next.js website. However, if you're using MDX in your Next.js application, there is no one-size-fits-all solution for implementing a "copy to clipboard" button. Some code highlighting libraries include this functionality, either built-in or through a plugin. This feature is especially useful on mobile devices, providing users with a fast and straightforward method of sharing code fragments without the need to select text manually. Many websites make code sharing more accessible by adding a "copy to clipboard" button to their code snippets. We recommend using next/script in your component instead of manually creating a in next/head.Code sharing is an essential aspect of modern web development, enabling developers to collaborate and learn from each other. Or wrapped into maximum one level of or arrays-otherwise the tags won't be correctly picked up on client-side navigations. script) need to be contained as direct children of the Head element, ![]() The contents of head get cleared upon unmounting the component, so make sure each page completely defines what it needs in head, without making assumptions about what other pages added. ![]() meta tags with duplicate key attributes are automatically handled. In this case only the second is rendered. Import Head from 'next/head' function IndexPage () export default IndexPage
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