so I am having a page where there is an input field. I want this to work like a CMS system. Let's say that there are options. What I am working on now is one where you can specify how long the summery will be for the content. So I want the input to be saved and sent to the function file where I can use that information in a function. I don't want to be sent to this function file site. Similar to how you can save options in wordpress, but you stay on the same page. I imagine that I perhaps have to use AJAX.
Any help on how I can do this?