JSFiddle - React, Tailwind, and code Playground

JavaScript

$.ajax({
   url: "http://www.cjihrig.com/development/jsonp/jsonp.php?callback=jsonpCallback&message=Hello",
   dataType: 'jsonp',
   crossDomain:true,
    jsonpCallback: 'jsonpCallback',
    jsonp: false,
    success: jsonpCallback,
})
.done(function( msg ) {
  alert( "Done : " + msg );
})
.fail(function( msg) {
  alert( "Fail : " + msg);
})
.always(function( msg ) {
  alert( "Always : " + msg );
});

 function jsonpCallback(data){
        alert("jsonpCallback");
    }