<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title> <style> *{margin: 0;padding: 0;} html,body{width: 100%;height: 100%;} ul,ol{list-style: none;} ul{width: 100%;height: 100%;} ul li{width: 100%;height: 100%;} ol{position: fixed;top: 100px;left: 100px;} ol li{ width: 50px; height: 50px; border: 1px solid #000; margin-top: -1px; text-align: center; font: 400 22px/50px "simsun"; cursor: pointer; } </style> </head> <body> <ul id="ul"> <li>男装区</li> <li>女装区</li> <li>童装区</li> <li>孕装区</li> <li>老年装区</li> </ul> <ol id="ol"> <li>男装</li> <li>女装</li> <li>童装</li> <li>孕装</li> <li>老年</li> </ol> </body> </html> <script> //需求:给所有盒子添加颜色,点击ol的li,页面跳转到ul中相应的li //步骤: //1、利用数组给所有盒子添加颜色 //2、缓动框架移动最顶端 //3、移动到指定位置(给ol中的li绑定索引值,获取对应的ul中的li距离顶端的距离,赋值给target,好让页面跳转 //4、屏幕滑动,记录屏幕的位置 var ul = document.getElementById("ul"); var ol = document.getElementById("ol"); var ulLis = ul.children; var olLis = ol.children; var arr = ["pink","yellow","green","purple","orange"]; var timer = null,target = 0,leader = 0; window.onscroll = function () { //屏幕滑动,给屏幕目前所在的位置赋值。 leader = scroll().top; } for(var i=0;i<olLis.length;i++){ //为每一个盒子上色,ul和ol中的li对应颜色 ulLis[i].style.backgroundColor = arr[i]; olLis[i].style.backgroundColor = arr[i]; olLis[i].index = i; olLis[i].onclick = function(){ //给目标位置赋值(小盒子对应的大盒子距离顶部的距离) target = ulLis[this.index].offsetTop; clearInterval(timer); timer = setInterval(function(){ var step = (target-leader)/10; step = step>0?Math.ceil(step):Math.floor(step); leader = leader+step; window.scrollTo(0,leader); if(target == leader){ clearInterval(timer); } },30) } } </script>
时间: 2024-10-14 00:50:25