js下拉菜单列表与登录注册弹窗 JS实现下拉菜单列表与登录注册弹窗效果

时间:2021-03-29 人气:0

想了解JS实现下拉菜单列表与登录注册弹窗效果的相关内容吗，在本文为您仔细讲解js下拉菜单列表与登录注册弹窗的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：js下拉菜单列表，下面大家一起来学习吧。

下拉菜单列表

<style>
    *{
      margin: 0px;
      padding: 0px;
    }
    .menu{
      width: 1100px;
      height: 30px;
      background-image: url(img/魅力罗兰Music炫图18.jpg);
      margin-left: 200px;
      margin-top: 50px;
    }
    .btn{
      width: 183.3px;
      height: 30px;
      float: left;
      text-align: center;
      line-height: 30px;
      font-size: 14px;
      position: relative;
      overflow: hidden;
      transition: 0.5s;
    }
    .btn:hover{
      cursor: pointer;
      background-color: burlywood;
      color: white;
      max-height: 200px;
      overflow: visible;
    }
    .btn ul{
      list-style: none;
      background-color: #008000;
    }
    
  </style>
  
  <body>
    <div class="menu">
      <div class="btn">罗兰首页</div>
      <div class="btn">歌曲专栏
        <ul>
          <li>流行</li>
          <li>摇滚</li>
          <li>蓝调</li>
          <li>民谣</li>
        </ul>
      </div>
      <div class="btn">音乐人专栏
        <ul>
          <li>内地</li>
          <li>欧美</li>
          <li>日韩</li>
          <li>港台</li>
        </ul>
      </div>
      <div class="btn">乐器专栏
        <ul>
          <li>钢琴</li>
          <li>小提琴</li>
          <li>吉他</li>
          <li>架子鼓</li>
        </ul>
      </div>
      <div class="btn">戏曲专栏
        <ul>
          <li>京剧</li>
          <li>话剧</li>
          <li>豫剧</li>
          <li>黄梅戏</li>
        </ul>
      </div>
      <div class="btn">魅力ROLAND体验区
        <ul>
          <li>新曲</li>
          <li>唱片</li>
          <li>MV</li>
        </ul>
      </div>
    </div>
    
  </body>

登录注册弹窗效果

<html>

  <head>
    <meta charset="UTF-8">
    <title></title>
    <style>
      * {
        margin: 0px;
        padding: 0px;
      }
      
      .login {
        width: 100px;
        height: 30px;
        font-size: 25px;
        line-height: 30px;
        border: 1px solid black;
        text-align: center;
        background-color: darkcyan;
        color: white;
      }
      
      .login:hover {
        cursor: pointer;
        background-color: greenyellow;
      }
      
      .mask {
        width: 100%;
        background-color: black;
        opacity: 0.5;
        position: absolute;
        top: 0px;
        left: 0px;
        z-index: 90;
      }
      
      .log-div {
        width: 500px;
        height: 300px;
        background-color: white;
        position: fixed;
        z-index: 99;
      }
    </style>
  </head>

  <body>
    <div class="mask" hidden></div>
    <div class="log-div" hidden="hidden"></div>
    <div class="login">登 录</div>
    <p>123</p><p>123</p><p>123</p><p>123</p><p>123</p><p>123</p><p>123</p>
    <p>123</p><p>123</p><p>123</p><p>123</p><p>123</p><p>123</p><p>123</p>
    <p>123</p><p>123</p><p>123</p><p>123</p><p>123</p><p>123</p><p>123</p>
    <p>123</p><p>123</p><p>123</p><p>123</p><p>123</p><p>123</p>


  </body>

</html>

<script>
  var mask = document.getElementsByClassName("mask")[0];
  var login = document.getElementsByClassName("log-div")[0];
  var btn = document.getElementsByClassName("login")[0];

  var clientWidth = document.body.clientWidth;
  var clientHeight = document.documentElement.clientHeight;

  login.style.left = clientWidth / 2 - 250 + "px";
  login.style.top = clientHeight / 2 - 150 + "px";
  
  mask.style.height = document.body.clientHeight + "px";

  window.onresize = function() {
    var clientWidth = document.body.clientWidth;
    var clientHeight = document.documentElement.clientHeight;

    login.style.left = clientWidth / 2 - 250 + "px";
    login.style.top = clientHeight / 2 - 150 + "px";
  }
  
  btn.onclick = function(){
    mask.removeAttribute("hidden");
    login.removeAttribute("hidden");
  }
  
  mask.onclick = function(){
    mask.setAttribute("hidden","");
    login.setAttribute("hidden","hidden");
  }
</script>

以上这篇JS实现下拉菜单列表与登录注册弹窗效果就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。

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