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源代码：
点击运行
<!DOCTYPE html> <html> <head> <script src="//libs.baidu.com/jquery/1.10.2/jquery.min.js"> </script> <script> $(document).ready(function(){ var x=0; $("p").click(function(event){ $("p").animate({fontSize:"+=5px" }); x++; if (x>=2) { $(this).off(event); } }); }); </script> </head> <body> <p>Click this p element to increase its size. The size can only be increased 2 times.</p> </body> </html>
运行结果
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