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<html><head><script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.1/jquery.min.js"></script><script>$(document).ready(function(){ $("p").one("click", function(){ $(this).animate({fontSize: "+=6px"}); });});</script></head><body><p>This is a paragraph.</p><p>This is another paragraph.</p><p>Click any p element to increase its text size. The event will only trigger once for each p element.</p></body><!-- Mirrored from www.w3schools.com/jquery/tryit.asp?filename=tryjquery_event_one by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 18:06:20 GMT --></html>