<button onclick="myFunction()">Click me</button>

<p id="demo"></p>

<p>A function is triggered when the button is clicked. The function outputs some text in a p element with id="demo".</p>

<script>
function myFunction() {
  document.getElementById("demo").innerHTML = "Hello World";
}
</script>

<p id="demo" onclick="myFunction()">Click me to change my text color.</p>

<p>A function is triggered when the p element is clicked. The function sets the color of the p element to red.</p>

<script>
function myFunction() {
  document.getElementById("demo").style.color = "red";
}
</script>