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编辑您的代码：
<!DOCTYPE html> <html> <head> <script src="../../ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"> </script> <script> $(document).ready(function(){ $("#btn1").click(function(){ $("p").append(" <b>Appended text</b>."); }); $("#btn2").click(function(){ $("ol").append("<li>Appended item</li>"); }); }); </script> </head> <body> <p>This is a paragraph.</p> <p>This is another paragraph.</p> <ol> <li>List item 1</li> <li>List item 2</li> <li>List item 3</li> </ol> <button id="btn1">追加文本</button> <button id="btn2">追加列表项</button> </body> </html>
查看结果: