过渡效果

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }
        
        body {
            background-color: black;
        }
        
        .main {
            position: relative;
            width: 1200px;
            height: 40px;
            background-color: white;
            margin: 50px auto;
            line-height: 40px;
            border-radius: 10px;
        }
        
        .main ul {
            display: flex;
            justify-content: space-evenly;
        }
        
        .main ul li {
            list-style: none;
            width: 150px;
            height: 40px;
            z-index: 999;
            text-align: center;
        }
        
        .cloud {
            position: absolute;
            top: 0;
            left: 0;
            display: inline-block;
            width: 150px;
            height: 40px;
            background-color: yellowgreen;
            border-radius: 10px;
        }
        
        .licolor {
            color: white !important;
        }
    </style>
</head>

<body>
    <div class="main">
        <span class="cloud"></span>
        <ul>
            <li>首页新闻</li>
            <li>师资力量</li>
            <li>活动策划</li>
            <li>企业文化</li>
            <li>招聘信息</li>
            <li>公司简介</li>
            <li>上海校区</li>
            <li>广州校区</li>
        </ul>
    </div>
    <script src="animation.js"></script>
    <script>
        var cloud = document.querySelector('.cloud');
        var main = document.querySelector('.main');
        var lis = main.querySelectorAll('li');
        var current = 0;
        var pp = 0;

        lis[0].style.color = 'white';
        for (var i = 0; i < lis.length; i++) {

            lis[i].addEventListener('mouseenter', function() {
                for (var i = 0; i < lis.length; i++) {
                    lis[i].style.color = 'black';
                }
                animation(cloud, this.offsetLeft)
                this.style.color = 'white';
            })
            lis[i].setAttribute('index', i);

            lis[i].addEventListener('mouseleave', function() {
                animation(cloud, current);
                for (var i = 0; i < lis.length; i++) {
                    lis[i].style.color = 'black';
                }
                var index = this.getAttribute('index');
                if (pp != index || pp == index) {
                    lis[pp].style.color = 'white';
                }
                console.log(pp);
                console.log(index);

            })

            lis[i].addEventListener('click', function() {
                current = this.offsetLeft;
                pp = current / 150;
                // this.style.color = 'white';
                this.style.className = 'licolor';
            })
        }
    </script>
</body>

</html>

 

  • 首页新闻
  • 师资力量
  • 活动策划
  • 企业文化
  • 招聘信息
  • 公司简介
  • 上海校区
  • 广州校区
function animation(obj, target, callback) { clearInterval(obj.timer); obj.timer = setInterval(function() { var step = (target - obj.offsetLeft) / 3; step = step > 0 ? Math.ceil(step) : Math.floor(step); if (obj.offsetLeft == target) { clearInterval(obj.timer); if (callback) { callback(); } } obj.style.left = obj.offsetLeft + step + 'px'; }, 30) }
posted @ 2023-03-25 22:20  二王戏木  阅读(12)  评论(0编辑  收藏  举报