node2:/var/www/html/jquery/aa#cat a10.html
<div id="text">根据给定的ID匹配一个元素,返回单个元素</div>
<script type="text/javascript" src="jquery-2.2.2.min.js"></script>
<script type="text/javascript" src="a10.js"></script>
node2:/var/www/html/jquery/aa#cat a10.js
var str1=$("#text").html();
console.log(str1);