Update

uebung10/quiz.html

@@ -118,7 +118,7 @@ function answerQuestion(event) {
                 falschAudio.play();
                 target.style.backgroundColor = "red";
                 console.log(question.solution);
-                document.getElementById("answer" + question.solution).style.backgroundColor == "green";
+                document.getElementById("answer" + question.solution).style.backgroundColor = "green";
         }
         setTimeout(function () {
                 currentQuestion++;