JavaScript -Fensterwarnung
<!DOCTYPE html>
<html>
<body>
<h2>Very Serious Alert!!</h2>
<script>
alert("Never Gonna Give You Up");
</script>
</body>
</html>
Rick Astley
<!DOCTYPE html>
<html>
<body>
<h2>Very Serious Alert!!</h2>
<script>
alert("Never Gonna Give You Up");
</script>
</body>
</html>
alert("Hello! I am an alert box!!"); alert("Well I'm line 1 \nAnd I am a new line "); //new line in alert box Alert.alert(
'Photo uploaded!',
'Your photo has been uploaded to Firebase Cloud Storage!'
);alert("this is the alert") alert("Hello! I am an alert!!");