JSFiddle - React, Tailwind, and code Playground

JavaScript

var url = 'https://httpbin.org/get';
var url2 = 'https://httpbin.org/FAIL';

function ajax1(url) {
	return $.ajax({
		url: url
	});
};


function ajax2(url) {
	return $.ajax({
		url: url
	});
};

var onSuccess = function(a1, a2) {
	console.log("All requests successful!");
};

var onError = function(res) {
	console.log("Request failed with responseText: " + res.responseText);
};


$.when(
	ajax1(url),
	ajax2(url2)).then(onSuccess, onError);