JavaScript

超轻量级php框架startmvc

JS实现下拉菜单列表与登录注册弹窗效果

更新时间:2020-05-29 04:18 作者:startmvc
下拉菜单列表<style>*{margin:0px;padding:0px;}.menu{width:1100px;height:30px;background-image:url(img/魅力

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>

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