if it helps you can think of intercooler as HTML++, addressing the shortcomings of HTML (only supporting GET/POST, only allowing clicks/submissions to generate requests, only targeting full page replacements, etc.) rather than trying to be something like React.

It isn't right for everything, but it works well for me w/ a rails back end and there are some good theoretical reasons for using HTML if you like REST/HATEOAS. I linked a few articles up thread you can read if you are interested.