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<!DOCTYPE html> <html> <head> <script src="/lib/jquery-1.12.2.min.js"></script> <script> $(document).ready(function(){ $("p").one("click dblclick", function(){ $(this).animate({fontSize: "+=6px"}); }); }); </script> </head> <body> <p>This is a paragraph.</p> <p>This is another paragraph.</p> <p>Click and double click any p element to increase its text size. Event handlers will trigger once per element per event type (one click, and one dblclick).</p> </body> </html>