VanillaJS vs JQuery – wait handler until two async requests are done

I have used JQuery since a long time and i am familar with the AJAX-Calls in it. I often had the situation where i had to wait until multiple requests have been finished and continue after that with the results. The JQuery syntax was the following: $.when( $.ajax({ type: “POST”, url: ‘/Services/Service.asmx/GetResults1’, contentType: “application/json; charset=utf-8”,…