Nowadays almost all web pages contain JavaScript, a scripting programming language that runs on visitor's web browser. It makes web pages functional for specific purposes and if disabled for some reason, the content or the functionality of the web page can be limited or unavailable.
Pay attention:
In case if JavaScript is disabled in your browser, you may run into exam page eternal-loading issue.
You can always check if JavaScript is enabled in your browser.
To enable JavaScript, copy an appropriate link into address bar of your browser and hit Enter:
Google Chrome – chrome://settings/content/javascript
Yandex.Browser – browser://settings/content
Microsoft Edge – edge://settings/content/javascript
Select the "Sites can use JavaScript" option as in the picture below:
After enabling JavaScript, you need to reload the page where you have faced loading issues.