Are AJAX and JQUERY technologies relevant in today's web realities?

Question

AJAX

There is so much information about them on the Internet, but there are rumors that sites already do well without them in native languages, is this true?

Answer 1

jquery - such a js for the lazy, a lot of long functions combined into convenient wrappers, naturally there are many supporters of jquery (for example, there are a bunch of ready-made js scripts using both the jquery engine), and many champions of "pure Aryan" code (only vanilla, only hardcore !). In fact, it all depends on the task, the level of ownership and the philosophy of the developer. As such, the library is not particularly outdated and is used in many places, whether you personally use it is a matter of taste and belief. More discussed here .
As for AJAX - most likely you do not quite understand what the essence is, since this is not some kind of library or framework, but a method of interaction between the client and the server, via the http (s) protocol, which allows you to send requests without having to reload the page, but from page context (read about XMLHttpRequest ), and is an integral part of the web api and will become obsolete very soon. A socket connection can serve as an alternative, but usually the scope of these technologies is different, as are the tasks that they perform.

Answer 2

Guys, tell me, what should I study now for asynchronous and front-DB binding? I'm just making a shopping cart in the store and I need to connect all this somehow, but they said that the AJAX type is outdated and you can do everything in JS already.