<script src="/js/jquery-1.11.1.min.js">
$(document).ready(function(){
$("#btn1").click(function(){
$("p").append(" <b>Appended text</b>.");
$("#btn2").click(function(){
$("ol").append("<li>Appended item</li>");
<p>This is a paragraph.</p>
<p>This is another paragraph.</p>
<button id="btn1">追加文本</button>
<button id="btn2">追加列表项</button>