Скачать или смотреть How to Integrate Popper.js into Your Chrome Extension Content Script

A step-by-step guide on how to effectively use Popper.js within a Chrome extension content script for tooltips, overcoming common issues and ensuring a smooth integration.
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Solving Tooltip Issues with Popper.js in Chrome Extension Content Scripts

When building Chrome extensions, leveraging external libraries can enhance the user experience. One such useful library is Popper.js, designed for positioning tooltips and poppers. However, integrating it sometimes leads to issues, especially when working with content scripts. In this guide, we will tackle a common problem: how to successfully use Popper.js in your Chrome extension content script, particularly when faced with the error stating that document is undefined.

The Challenge: Document Undefined

In the scenario, a developer is attempting to display a tooltip after dynamically injecting HTML into the DOM. Despite being in the content-scripts.js file, which has access to the document object, they encounter the daunting message that document is not defined. Here's the sequence of events leading to this problem:

Content Script: A script designed to fetch data through background.js.

DOM Injection: After retrieving the data, new HTML is injected into the webpage.

Tooltip Setup: Attempting to create a tooltip leads to an error with document, outlining that it's not available for use as intended.

Code Example of the Issue

The following code demonstrates the moment when the issue occurs:

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In this snippet, the developer is trying to reference DOM elements immediately after injecting them, which leads to the error about the document being undefined.

The Solution: Importing Tippy.js

Fortunately, the solution to this problem involves using another library, tippy.js, which is built on top of Popper.js for creating tooltips easily. By importing both Popper.js and tippy.js, the process becomes much more seamless. Here’s how to properly implement it:

Step-by-Step Implementation

Import the Required Libraries: Ensure that the necessary libraries (Popper.js and tippy.js) are imported into your content script.

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Decorate Your Element with Tippy: Instead of manually querying the DOM right after injection, you can set up tippy directly on the element once the HTML has been injected.

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Modified HTML Injection Method

Here’s how you might modify the injectToDom method to successfully prompt the tooltip when the element is ready:

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Conclusion

Integrating Popper.js into your Chrome extension content scripts can greatly improve UI interactivity, but as with any library, challenges may arise. The key takeaway here is to ensure that you’re working with fully injected DOM elements and consider using exploratory libraries like tippy.js for elegant implementations. By following the steps outlined above, you can avoid common pitfalls and enhance your Chrome extension with tooltips seamlessly.

If you face any further issues or have questions about Chrome extension development, feel free to share your thoughts in the comments below!