Because WordPress is already have these jQuery & jQuery UI libraries (https://jqueryui.com/). Source: 12 months ago

We still use jQuery + jQuery UI on our website because it is basically battle tested through 15+ years. https://jqueryui.com/ It is easy as hell. What's there to not like? I don't care to be called names or being old fashioned. I also don't care about "right" tooling for frontend. As far it works and it is robust and it is going to be around for many years, I am fine with it. - Source: Hacker News / over 1 year ago

Looking at screenshots of ogame, it looks like it's just HTML and CSS driven by JS - essentially just a normal website. You could pick any web development framework (e.g. React) for a game like this. Sniffing their web traffic I see references to jQuery and jQuery UI (https://jqueryui.com/) which are ubiquitous tools for interactive websites. Source: over 1 year ago

You clearly haven’t heard of JQueryUI. Try doing these things with scattered libraries and JS codepens found on the 10th page on Google search: https://jqueryui.com/ jQuery is awesome. - Source: Hacker News / about 2 years ago

If you use jQuery, you can use jqueryui. If you use react you can use reach-ui. Source: about 2 years ago

The only missing feature in this architecture is the login and logout capability. In this case, Apache Zeppelin provides Shiro for notebook authentication. Apache Shiro is a powerful and easy-to-use Java security framework that performs authentication, authorization, cryptography, and session management. Here, you can find a step-by-step guide about how Shiro works. This example uses the default configuration. - Source: dev.to / 4 months ago

Apache Shiro is another security framework. I haven't tried it out myself, but I was sorely tempted to when trying to set up Spring Security. Source: about 3 years ago