js实现电梯导航效果的示例代码
作者:LxyingINGing
这篇文章主要介绍了JavaScript实现电梯导航效果的相关知识,文中通过示例代码介绍的很详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习吧
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="#" rel="external nofollow" ></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>
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