document.write("<div class=\"item\">    <div class=\"title\"><a href=\"http://www.itpow.com/c/2019/08/11532.asp\" target=\"_blank\"><span class=\"key\">jQuery</span> <span class=\"key\">两</span><span class=\"key\">种</span><span class=\"key\">扩展</span><span class=\"key\">功能</span> $.<span class=\"key\">fn</span>.<span class=\"key\">extend</span>、$.<span class=\"key\">extend</span></a></div>    <div class=\"abstract\"><span class=\"pubDate\">2019年08月20日</span> ery);$.cftea();可以看出 $.<span class=\"key\">fn</span>.<span class=\"key\">extend</span> <span class=\"key\">扩展</span>的<span class=\"key\">功能</span>，是要用 $(&quot;&quot;) 包装的对象，而 $.<span class=\"key\">extend</span> 是 $ 直接使用。以上都没有参数，要使用参数，</div>    <div class=\"url\"><a href=\"http://www.itpow.com/c/2019/08/11532.asp\" target=\"_blank\">http://www.itpow.com/c/2019/08/11532.asp</a></div></div>")