js实现电梯导航效果

2023-12-15 11:09:53

页面往下滑动到一定距离时,电梯导航显示,且与内容板块相呼应。使用了选项卡的功能,采用排他思想等实现。效果如下图所示:

代码:

封装函数 move.js:? ? ? ?可直接调用,无需修改

function move(obj, target, callback) {  
    clearInterval(obj.timer); // 清除之前的定时器  
    obj.timer = setInterval(function () {  
        var header = window.scrollY;  
        var distance = target - header;  
        var speed = distance / 10;  
        speed = speed > 0 ? Math.ceil(speed) : Math.floor(speed);  
        if (Math.abs(distance) <= Math.abs(speed)) { // 修改停止动画的条件  
            console.log('aaa');  
            clearInterval(obj.timer); // 清除定时器  
            window.scrollTo(0, target); // 确保滚动到目标位置  
            callback && callback();  
        } else {  
            window.scrollTo(0, header + speed);  
        }  
    }, 15);  
}

?详细代码如下:

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            list-style: none;

        }

        .header {
            width: 1200px;
            height: 1000px;
            background-color: aqua;
            margin: 0 auto;
        }

        .floor1 {
            width: 1200px;
            height: 700px;
            background-color: rgba(255, 0, 0, 1);
            margin: 10px auto;
            font-size: 30px;
            text-align: center;
            line-height: 700px;
        }

        .floor2 {
            width: 1200px;
            height: 700px;
            background-color: rgba(255, 0, 0, 0.8);
            margin: 10px auto;
            font-size: 30px;
            text-align: center;
            line-height: 700px;
        }

        .floor3 {
            width: 1200px;
            height: 700px;
            background-color: rgba(255, 0, 0, 0.6);
            margin: 10px auto;
            font-size: 30px;
            text-align: center;
            line-height: 700px;
        }

        .floor4 {
            width: 1200px;
            height: 700px;
            background-color: rgba(255, 255, 0, 1);
            margin: 10px auto;
            font-size: 30px;
            text-align: center;
            line-height: 700px;
        }

        .floor5 {
            width: 1200px;
            height: 700px;
            background-color: rgba(255, 0, 255, 1);
            margin: 10px auto;
            font-size: 30px;
            text-align: center;
            line-height: 700px;
        }

        .floor6 {
            width: 1200px;
            height: 700px;
            background-color: rgba(255, 0, 0, 1);
            margin: 0 auto;
            font-size: 30px;
            text-align: center;
            line-height: 700px;
        }

        .floor7 {
            width: 1200px;
            height: 700px;
            background-color: rgba(255, 255, 0, 1);
            margin: 10px auto;
            font-size: 30px;
            text-align: center;
            line-height: 700px;
        }

        .floor8 {
            width: 1200px;
            height: 700px;
            background-color: rgba(255, 210, 0, 1);
            margin: 10px auto;
            font-size: 30px;
            text-align: center;
            line-height: 700px;
        }

        .floor9 {
            width: 1200px;
            height: 700px;
            background-color: rgba(255, 255, 0, 1);
            margin: 10px auto;
            font-size: 30px;
            text-align: center;
            line-height: 700px;
        }

        .floor10 {
            width: 1200px;
            height: 700px;
            background-color: rgba(255, 0, 255, 1);
            margin: 10px auto;
            font-size: 30px;
            text-align: center;
            line-height: 700px;
        }

        .floor11 {
            width: 1200px;
            height: 700px;
            background-color: rgba(255, 0, 0, 1);
            margin: 0 auto;
            font-size: 30px;
            text-align: center;
            line-height: 700px;
        }

        .footer {
            width: 1200px;
            height: 800px;
            background-color: rgba(0, 0, 0, 1);
            margin: 10px auto;
        }


        .elevator {
            width: 44px;
            height: auto;
            background: #e9e6e6;
            position: fixed;
            left: 50%;
            top: 50%;
            transform: translateX(-50%);
            /* z-index: 999; */
            margin: -266.5px 640px 0 0;
            margin-left: -650px;
            padding-bottom: 4px;
            display: none;
        }

        .elevator ul li {
            font-size: 12px;
            width: 28px;
            height: 29px;
            padding: 4px;
            color: #fff;
            text-align: center;
            margin: 4px 4px 0 4px;
            cursor: pointer;
            background: #655f61;
            line-height: 14px;
        }

        .elevator ul li:nth-child(1) {
            line-height: 29px;
            background: #ff1a66;
        }

        .elevator ul li:last-child {
            line-height: 29px;
            background: #acacac;
        }

        .elevator ul li:hover {
            background: #f69;
        }

        .elevator ul li.active {
            background: #f69;
        }

        .elevator ul li.r_active {
            background: #666;
        }
    </style>
</head>

<body>
    <div class="header"></div>
    <div class="floor1  f">黄金铂金</div>
    <div class="floor2  f">投资金银</div>
    <div class="floor3  f">钻石</div>
    <div class="floor4  f">银饰</div>
    <div class="floor5  f">彩色宝石</div>
    <div class="floor6  f">翡翠玉石</div>
    <div class="floor7  f">珍珠</div>
    <div class="floor8  f">流行饰品</div>
    <div class="floor9  f">天然木饰</div>
    <div class="floor10  f">奇趣收藏</div>
    <div class="floor11  f">眼镜手表</div>
    <div class="footer"></div>

    <div class="elevator">
        <ul>
            <li>导航</li>
            <li class="item active">黄金铂金</li>
            <li class="item">投资金银</li>
            <li class="item">钻石</li>
            <li class="item">银饰</li>
            <li class="item">彩色宝石</li>
            <li class="item">翡翠玉石</li>
            <li class="item">珍珠</li>
            <li class="item">流行饰品</li>
            <li class="item">天然木饰</li>
            <li class="item">奇趣收藏</li>
            <li class="item">眼镜手表</li>
            <li class="backtop"><a href="#"></a>顶部</li>
        </ul>
    </div>
    <script src="./js/move.js"></script>
    <script>
        (function () {
            //查节点对象
            var floor1 = document.querySelector('.floor1');
            var elevator = document.querySelector('.elevator');
            var items = document.querySelectorAll('.elevator li.item');
            var fs = document.querySelectorAll('.f');
            var backTop = document.querySelector('.elevator li.backtop');
            var footer=document.querySelector('.footer');
            //1.页面滚动时电梯导航的显示与隐藏效果
            load();
            function load() {
                //页面卷进去的距离
                var disY = document.documentElement.scrollTop;
                //第一个楼层与页面顶部的距离
                var dis = floor1.offsetTop - 200;
                if (disY >= dis) {
                    elevator.style.display = "block";
                } else {
                    elevator.style.display = "none";
                }
                //4.交互,相应li对应相应楼层
                for (var i = 0; i < fs.length; i++) {
                    var fs_D_top = fs[i].offsetTop-100;
                    if (disY >= fs_D_top) {
                        document.querySelector('.elevator li.active').classList.remove('active');
                        items[i].classList.add('active');
                    }
                    //到最后一个楼层不再继续往下变颜色
                    if(disY>footer.offsetTop){
                        document.querySelector('.elevator li.active').classList.add('r_active');
                    }else{

                        document.querySelector('.elevator li.active').classList.remove('r_active');
                    }
                }
            }
            //页面滑动
            window.onscroll = function () {
                load();
            }
            //2.选项卡
            //单击小li切换到对应页面
            for (let i = 0; i < items.length; i++) {
                items[i].onclick = function () {
                    document.querySelector('.elevator li.active').classList.remove('active');
                    this.classList.add('active');
                    //呼应内容区
                    move(window, fs[i].offsetTop)
                }
            }
            //3.返回顶部
            backTop.onclick = function () {
                move(window, 0);
            }
        })();        
    </script>
</body>

</html>

文章来源:https://blog.csdn.net/LxyingINGing/article/details/134898259
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