Lesson 9: Event Listeners, Click Handlers & Event Bubbling

Events connect user interactions (clicks, keyboard strokes, form submissions) to JavaScript logic.

element.addEventListener('click', handler): Standard event binding without overwriting existing handlers.

event.target: The actual DOM node that dispatched the event.

event.preventDefault(): Cancels default browser behaviors.

event.stopPropagation(): Stops events from bubbling up the parent DOM tree.

⊞HTML5 Web Code (index.html)

<!DOCTYPE html>

<head>

<title>Event Listeners</title>

</head>

<h2>Interactive Event Studio</h2>

const input = document.getElementById("live-input");

const feedback = document.getElementById("live-feedback");

input.addEventListener("input", (e) => {

feedback.textContent = "Live Text: " + e.target.value;

});

</script>

</body>

</html>