JSFiddle - React, Tailwind, and code Playground

HTML

<div id="Content"></div>

JavaScript

$(document).ready(function() {
    
    
    //here is one way using the 'error' handler
        $.ajax({
            type: "POST",
            url: "/failOnPurpose",
            data: "{'usd'}",
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            error:function(jqXHR, textStatus) { 
                alert("error:" + textStatus); 
            },
            success: function(msg) {        
              // Insert the returned HTML into the <div>.
              $('#Content').html(msg.d);
            }    
        });
    
    //here is another way using the 'fail' request handler
        $.ajax({
            type: "POST",
            url: "/failOnPurpose",
            data: "{'usd'}",
            contentType: "application/json; charset=utf-8",
            dataType: "json",            
            success: function(msg) {        
              // Insert the returned HTML into the <div>.
              $('#Content').html(msg.d);
            }    
        }).fail(function(jqXHR, textStatus) {
                  alert( "fail: " + textStatus );
        });
    
    });