Use the onclick attribute to execute a script when the element is clicked in HTML.
Example
You can try to run the following code to implement onclick attribute −
<!DOCTYPE html>
<html>
<body>
<button onclick = "display()">Click</button>
<p id = "test"></p>
<script>
function display() {
document.getElementById("test").innerHTML = "You clicked the button!";
}
</script>
</body>
</html>