Accessing Current Tab DOM Object from “popup.html”?

by

By default, within popup.js/popup.html, the “document” object refers to the extension’s popup window’s document only. To get the DOM for a specific tab (for instance the currently active tab), you would need to use content scripts communications. For example we need to send a request from the extension to your content script via popup, so in the popup.html you do something like this:

chrome.tabs.getSelected(null, function(tab) {
  // Send a request to the content script.
  chrome.tabs.sendRequest(tab.id, {action: "getDOM"}, function(response) {
    console.log(response.dom);
  });
});

Now in the content script, we need to listen for those events coming from the extension, so in some file we named dom.js

chrome.extension.onRequest.addListener(function(request, sender, sendResponse) {
 if (request.action == "getDOM")
   sendResponse({dom: "The dom that you want to get"});
 else
   sendResponse({}); // Send nothing..
});

Now remember to setup your manifest to include the content script and tab permission.

More Related Contents:

  1. How to wait until an element exists?
  2. Chrome doesn’t delete session cookies
  3. How do I load an HTML page in a div using JavaScript?
  4. How does the paste image from clipboard functionality work in Gmail and Google Chrome 12+?
  5. JSFiddle code not working in my own page
  6. How to use jQuery in chrome extension?
  7. How to getting browser current locale preference using javascript?
  8. getUserMedia() in chrome 47 without using https
  9. Chrome Extension: Make it run every page load
  10. \u200b (Zero width space) characters in my JS code. Where did they come from?
  11. Chrome Autofill/Autocomplete no value for password
  12. saving and retrieving from chrome.storage.sync
  13. Finding JavaScript memory leaks with Chrome
  14. How to make side panel in chrome extension?
  15. How to disable a “Reload site? Changes you made may not be saved” popup for (python) selenium tests in chrome?
  16. How do I send an HTTP request from a Chrome extension?
  17. Sending message to background script
  18. Resource interpreted as Script but transferred with MIME type text/plain – for local file
  19. Can’t find serviceWorker in navigator anymore
  20. Chrome Speech Synthesis with longer texts
  21. Javascript window.print() in chrome, closing new window or tab instead of cancelling print leaves javascript blocked in parent window
  22. 307 Redirect when loading analytics.js in Chrome
  23. How to fix chrome-extension inline JavaScript invocation error?
  24. Disable brower’s auto scroll after a page refresh?
  25. Chrome extension identity.email empty
  26. Programmatically accessing function scope using Chrome DevTools console
  27. Can’t pass arguments to chrome.declarativeContent.SetIcon
  28. Chrome userscript error: “Unsafe JavaScript attempt to access frame”
  29. HTML5 Notification not working in Mobile Chrome
  30. Chrome Extension get selected text

Leave a Comment