Lesson 18
Interactive HTML + JavaScript
Events
Learn how JavaScript responds to actions such as button clicks.
What you should understand
Read the lesson carefully, study the example, then use the editor below to experiment with the code yourself.
Example Code
HTML + JavaScript example
<!DOCTYPE html>
<html>
<body>
<button onclick="sayHello()">Click Me</button>
<p id="output"></p>
<script>
function sayHello() {
document.getElementById("output").textContent =
"You clicked the button!";
}
</script>
</body>
</html>
Output
See what your code produces.
Click "Run Example" to execute the example.
Quick Check
Test your understanding
Choose the best answer.
Which method can select an element by its ID?