To access an array defined in one JavaScript file from another JavaScript file in a Chrome Extension, you need to follow the proper module organization and include the files in the correct order.

Here's a step-by-step guide on how to do it:

  1. Organize Your JavaScript Files: In your Chrome Extension project, make sure your array is defined in a separate JavaScript file, let's say data.js, and export it as a module.
// data.js const myArray = [1, 2, 3]; export default myArray;
  1. Import the Array in the Other JavaScript File: In the JavaScript file where you want to access the array, import it using the import statement.
// other.js import myArray from './data.js'; console.log(myArray); // You can now access the array here
  1. Include the Files in the Correct Order: Make sure to include the JavaScript files in the correct order in your HTML or the JavaScript files where they are needed. For a Chrome Extension, you can include them in the background script or content script, depending on where you need to access the array.

For example, if you have a background.js and content.js, you can include them in your manifest.json file like this:

// manifest.json { "manifest_version": 3, "name": "Your Extension Name", "version": "1.0", "background": { "service_worker": "background.js" }, "content_scripts": [ { "matches": ["<all_urls>"], "js": ["content.js"] } ], "permissions": [ "activeTab", "scripting" ] }

Make sure to include data.js before other.js in the HTML or background/content script file where you want to use the array.

Note: In Chrome Extensions with manifest version 3, you should use module scripts (type="module") in your HTML file or the background/content scripts to support modern JavaScript import/export syntax.

With these steps, you can access the array defined in one JavaScript file from another in your Chrome Extension. Just ensure that the module containing the array is properly exported and imported wherever needed.

Have questions or queries?
Get in Touch