Chrome Extension To Pull Text From Script

I'm attempting to pull 'webId%22:%22' var string from a script tag using JS for a Chrome extension. The example I'm currently working with allows me to pull the page title. // pay

Solution 1:

1. You have inline code in onclick attribute which won't work, see this answer. You can see an error message in devtools console for the popup: right-click it, then "Inspect". The simplest solution is to attach a click listener in your popup.js file.

2. The popup is an extension page and thus it can access chrome.tabs.executeScript directly without chrome.extension.getBackgroundPage(), just don't forget to add the necessary permissions in manifest.json, preferably "activeTab".

3. For such a simple data extraction you don't even need a separate content script file or messaging, just provide code string in executeScript.

chrome.tabs.executeScript({
  code: '(' + (() => {
    for (const el ofdocument.querySelectorAll('script[if="inlineJs"]')) {
      const m = el.textContent.match(/"([^"]*%22webId%22[^"]*)"/);
      if (m) return m[1];
    }
  }) + ')()',
}, results => {
  if (!chrome.runtime.lastError && results) {
    document.querySelector('p').textContent = decodeURI(results[0]);
  }
});