promise2.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        function getFlights() {
            return new Promise((resolve, reject) => {
                setTimeout( () => {
                       resolve("Got Flights from server ..."); 
                }, 2000);
            });
        }

        function getHotels() {
            return new Promise((resolve, reject) => {
                setTimeout( () => {
                       resolve("Got Hotels from server ..."); 
                }, 3000);
            });
        }

        console.time("travel-profile");
        Promise.all([getFlights(), getHotels()]).then(values => {
            console.timeEnd("travel-profile");
            console.log('Flights' , values [0]);
            console.log('Hotels' , values [1]);
        }, (err) => console.log("Service unavailable!!!"));

        console.log("Bye!!!");
    </script>
</body>
</html>