text: // Launch app
  document.addEventListener("readystatechange", (evt) => {
  	if (evt.target.readyState === "complete") {
  		initApp();
  	}
  });
  
  const initApp = () => {
      const httpRequest = new XMLHttpRequest();
  
      httpRequest.open('GET', '/javascript/ajax/test.php?city=montpellier', true);
      httpRequest.send();
  };
  
  // TODO AJAX 6:47 
  