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<!DOCTYPE html> <html> <head> <script src="/lib/jquery-1.12.2.min.js"></script> <script> $(document).ready(function(){ var x = 0; $("p").click(function(event){ $("p").animate({fontSize: "+=5px"}); x++; if (x >= 2) { $(this).unbind(event); } }); }); </script> </head> <body> <p style="font-size:20px;">Click this p element to increase its size. The size can only be increased 2 times.</p> </body> </html>