<!DOCTYPE html>
<html lang="en-US">
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> </head>
<body>
<h1>jQuery one() Method</h1>
<p>Click on this paragraph to increase its text size. The event will trigger only once.</p>
<script>
$(document).ready(function(){
$("p").one("click", function(){
$(this).css("font-size","+=5px");
});
});
</script> </body>
</html>