Here is an example of a basic Chrome extension that logs the number of buttons on the current website the user is visiting:


Create a new directory for the extension, and within it create a file called "manifest.json" with the following content:

json

Copy code

{

  "manifest_version": 2,

  "name": "Button Counter Extension",

  "version": "1.0",

  "content_scripts": [

    {

      "js": ["button_counter.js"],

      "matches": ["<all_urls>"]

    }

  ]

}


In the same directory, create another file called "button_counter.js" with the following content:

javascript

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var buttons = document.getElementsByTagName("button");

console.log("Number of buttons on this page: " + buttons.length);



In Chrome, navigate to chrome://extensions/, enable "Developer mode", and select "Load unpacked". Choose the directory where you saved the extension files.


Now, every time you visit a website, the number of buttons on that page will be logged in the JavaScript console.

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