Answers for "simple html ajax examplet"

ajax example

/*SM*/ 
$.ajax({
        method: "POST",
        url: "/controller/action",
        data: { name: "John", location: "Boston" },
        success: (result) => {
            console.log(result);
        },
        error: (error) => {
            console.log(error);
        }
    });

ajax jquery example

$.ajax({

   url     : "file.php",
   method  : "POST",

       data: { 
         //key                      :   value 
         action                   	:   action , 
         key_1   					:   value_key_1,
         key_2   					:   value_key_2
       }
   })

   .fail(function() { return false; })
	// Appel OK
   .done(function(data) {

   console.log(data);

 });