var pic = $('.picList a')console.log(pic)    <div class="picList">       <a href="#"><img src="./img/1.jpg" alt=""></a>       <a href="#"><img src="./img/2.jpg" alt=""></a>       <a href="#"><img src="./img/3.jpg" alt=""></a>       <a href="#"><img src="./img/4.jpg" alt=""></a>       <a href="#"><img src="./img/5.jpg" alt=""></a>     </div>怎么取不到值啊控制臺：jQuery.fn.init [prevObject: jQuery.fn.init(1)]jQuery 3.2.1