一
<!DOCTYPE html><html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><title>Insert title here</title><script type=\"text/javascript\" src=\"../script/jquery-1.7.2.js\"></script><script type=\"text/javascript\">$(function(){//不传参数,是获取,传递参数是设置alert($(\"div\").html());//获取,});</script></head><body><div>我是div中的 <span>我是div中的span</span></div></body></html>
二
<!DOCTYPE html><html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><title>Insert title here</title><script type=\"text/javascript\" src=\"../script/jquery-1.7.2.js\"></script><script type=\"text/javascript\">$(function(){//不传参数,是获取,传递参数是设置alert($(\"div\").html());//获取,$(\"div\").html(\"<h1>我是div的标题</h1>\");//设置});</script></head><body><div>我是div中的 <span>我是div中的span</span></div></body></html>