Datenkommunikation.txt

JavaScript: 
async function UserAction() {

           var xhr = new XMLHttpRequest(); //invoke a new instance of the XMLHttpRequest
            xhr.onload = success; // call success function if request is successful
            xhr.onerror = error;  // call error function if request failed
            xhr.open('POST', 'http://localhost:8080/tickets/'); // open a GET request
            xhr.setRequestHeader('Content-Type', 'application/json');
            xhr.send(JSON.stringify({
                vornameDesBesitzers:"Günther",
                nachnameDesBesitzers:"Jauch",
                startuhrzeit:"12:15:00",
                kinosaalNummer:"2",
                filmName:"Terminator7",
                preis:"12.77",
                status:"RESERVIERT"
            })); // send the request to the server.
            }


        function success() {
            var data = JSON.parse(this.responseText.toString()); //parse the string to JSON
            console.log(data);
        }

        // function to handle error
        function error(err) {
            console.log('Request Failed');
        }



HTML: 
<button onclick="UserAction()">Test</button>