fmpq.com
源代码：
点击运行
<!DOCTYPE html> <html> <head> <script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"> </script> <script> $(document).ready(function(){ $("div").on("click","p",function(){ $(this).slideToggle(); }); $("button").click(function(){ $("<p>This is a new paragraph.</p>").insertAfter("button"); }); }); </script> </head> <body> <div style="background-color:yellow"> <p>This is a paragraph.</p> <p>Click any p element to make it disappear. Including this one.</p> <button>Insert a new p element after this button</button> </div> </body> </html>
运行结果