You should enable JavaScript on an iPad so that websites you access function properly and so features like animations and videos work.

To enable JavaScript, go into the Settings app on your iPhone, click "Safari," then "Advanced," and swipe the JavaScript button to the right so it appears green. Here's a full breakdown with pictures.

JavaScript enhances web pages and add extra features which are not possible in normal HTML. If you 'enable' JavaScript in your browser, web designers can use additional tricks to resize the page ...