//html代碼:<div class="hot">        <div class="hot_nav">             <ul class="hot_list"><!--加了個class屬性-->                 <li class="bingxiang"><i></i><span>冰箱冷柜</span</li>                 <li class="xiyiji"><i></i><span>洗衣機</span></li>                 <li class="dianshi"><i></i><span>電視</span></li>                 <li class="kongtiao"><i></i><span>空調</span></li>                 <li class="reshuiqi"><i></i><span>熱水器</span></li>                 <li class="chufang"><i></i><span>廚房電器</span></li>                 <li class="shenghuo"><i></i><span>生活家電</span></li>             </ul>         </div>//JS代碼:$('.hot_nav').on('click','.hot_nav>ul>li',function(){var htype=$(this).attr('class');console.log(htype);loadhot(htype);});//ul下的li無法綁定,給ul加個class卻能找到,已經確定ul為唯一ul$('.hot_nav').on('click','.hot_list>li',function(){var htype=$(this).attr('class');console.log(htype);loadhot(htype);});