源代码:
<!DOCTYPE html> <html> <head> <script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"> </script> <script> $(document).ready(function(){ $("button").click(function(){ $("<span><b>Hello world!</b></span>").replaceAll("p:last"); }); }); </script> </head> <body> <button>Replace the last p element with a span element</button><br> <p>This is a paragraph.</p> <p>This is another paragraph.</p> </body> </html>
运行结果：