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Implémentation jQuery du code d'exemple de fonction de menu déroulant

PHPz
PHPzoriginal
2016-05-16 15:01:481994parcourir

Cet article présente principalement les informations pertinentes sur l'exemple de code de jQuery implémentant la fonction de menu déroulant. Les amis dans le besoin peuvent s'y référer.

Avec cent mots, pourquoi ne pas me laisser publier un rendu pour tout le monde. Veuillez consulter le rendu ci-dessous :

Implémentation jQuery du code dexemple de fonction de menu déroulant

Le code est le suivant : 

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title></title>
  <style type="text/css">
    * {
      margin: 0;
      padding: 0;
    }
    ul {
      list-style: none;
    }
    .wrap {
      width: 330px;
      height: 30px;
      margin: 100px auto 0;
      padding-left: 10px;
      background-color: skyblue;
    }
    .wrap li {
      background-color: skyblue;
    }
    .wrap > ul > li {
      float: left;
      margin-right: 10px;
      position: relative;
    }
    .wrap a {
      display: block;
      height: 30px;
      width: 100px;
      text-decoration: none;
      color: #000;
      line-height: 30px;
      text-align: center;
    }
    .wrap li ul {
      position: absolute;
      top: 30px;
      display: none;
    }
  </style>
  <script src="http://apps.bdimg.com/libs/jquery/2.1.4/jquery.js"></script>
  <script>
    $(function () {
      //获取所有li，添加移入事件
      $(".wrap>ul>li").mouseenter(function () {
        //设置内部的子元素ul slideDown
        $(this).children("ul").stop().slideDown(600);
      });
      //移出li时，让内部子元素slideUp
      $(".wrap>ul>li").mouseleave(function () {
        $(this).children("ul").stop().slideUp(600);
      });
      //如果当前运动没有完毕，又添加了新的动画，这时新的动画需要等待当前动画执行完毕才会开始
      //如果持续添加。一定会造成动画的积累，这种情况我们称为动画队列
    });
  </script>
</head>
<body>
<div>
  <ul>
    <li>
      <a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >一级菜单1</a>
      <ul>
        <li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >二级菜单11</a></li>
        <li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >二级菜单12</a></li>
        <li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >二级菜单13</a></li>
      </ul>
    </li>
    <li>
      <a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >一级菜单2</a>
      <ul>
        <li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >二级菜单21</a></li>
        <li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >二级菜单22</a></li>
        <li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >二级菜单23</a></li>
      </ul>
    </li>
    <li>
      <a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >一级菜单3</a>
      <ul>
        <li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >二级菜单31</a></li>
        <li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >二级菜单32</a></li>
        <li><a href="javascript:void(0);" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >二级菜单33</a></li>
      </ul>
    </li>
  </ul>
</div>
</body>
</html>

Ce qui précède est l'intégralité du contenu de l'implémentation jquery de l'exemple de fonction de menu déroulant. J'espère que cela sera utile à tout le monde !

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