How to intercept A tag jump and customize jump logic in CKEditor5?

Detailed explanation of CKEditor5 intercepts A tag jump and custom jump logic

This article introduces how to intercept the default jump behavior of the A tag in the CKEditor5 rich text editor and implement custom jump logic. After adding link and autolink plug-ins, by default, the user presses the Ctrl/Command key and clicks on the link while clicking on it, and it will jump to the new page. But in practical applications, we may need to intercept this jump, get the link address and perform custom actions, such as data analysis or jump to a specific page. Directly in<a></a> The binding onclick event on the tag is invalid because the internal mechanism of CKEditor5 will reset the tag attributes. Traversal and modify all<a></a> The href attribute of the tag will also be invalidated due to editor updates.

Solution: Utilize event capture mechanism

To solve the above problem, we use event capture mechanism to listen for click events. Add an event listener to the editor container to determine whether the click target is<a></a> Tag, intercept default jump.

The following code snippet demonstrates how to implement it:

 document.getElementById('editor').addEventListener('click', (e) => {
  if (e.target.tagName === 'A') { // Determine whether it is a tag e.preventDefault(); // Prevent the default jump const href = e.target.getAttribute('href');
    console.log('Captured link:', href);
    const isMac = /macintosh|mac os x/i.test(navigator.userAgent);
    if ((isMac && e.metaKey) || e.ctrlKey) {
      console.log('Ctrl/Command key pressed.');
      // Add custom jump logic here // For example: use fetch or XMLHttpRequest to send a request, or jump to another page // window.location.href = 'your_custom_url' href; 
      // Or use more complex logic to process href
    }
  }
}, true); // true enable event capture

Code description:

• addEventListener('click', ..., true) : Use event capture mode to ensure that events are intercepted before CKEditor5 resets properties.
• e.preventDefault() : prevents default jump behavior.
• e.target.getAttribute('href') : Get<a></a> href attribute of the tag.
• isMac : judges the operating system, compatible with Mac and Windows systems.
• e.metaKey (Mac) / e.ctrlKey (Windows): Determine whether to press the Ctrl/Command key.
• 'your_custom_url' href : This is an example you need to replace with your custom logic and URL. This part can be processed more complexly according to your needs, such as sending an AJAX request to the server for data processing before deciding whether to jump.

Through the event capture mechanism, we successfully intercepted CKEditor5<a></a> The default jump of the tag and executes custom logic when pressing the Ctrl/Command key, avoiding direct modification<a></a> The problem caused by the tag attribute is reset by CKEditor5. Remember to replace 'your_custom_url' with your actual processing logic.

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