The jQuery library is included by WordPress, not by web hosting providers. Plugins and themes can rewrite the jQuery version. You can check the jQuery version on your website by using this command in the browser console section: jQuery().jquery. Here’s how to do that using Google Chrome:
- Navigate to your website in your browser
- Open Developer Tools by right-clicking and choosing Inspect
- Select the Console tab
- Place your cursor on the first line and enter jQuery().jquery to see the version