js数字滑动时钟的简单实现(示例讲解)

时间：2021-05-26

废话不多说，直接上代码

<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title> <style type="text/css"> body,ul{margin:0;padding: 0;} .content{margin:100px auto;width: 1000px;} .box{position: relative;float: left;width: 50px;height: 120px;overflow: hidden;} .box li{position: absolute;left: 0;width:100%;height: 120px;list-style:none;font-size:80px;font-weight: bold;background-color: #fff; line-height: 120px; text-align: center;} .colon{float: left;height: 120px;font-size: 80px;color: #e91e63;font-weight: bold;line-height: 100px;} </style></head><body> <div class="content"> </div> <script type="text/javascript"> (function(){ var colors = ["#69D2E7", "#E20049", "#19215E", "#F38630", "#FA6900", "#FF4E50", "#F9D423", "#FFB6FF", "#474168", "#6ACAFC"]; var content = document.querySelector('.content'); var num = 0; var height = 120; var maxheight = (2-num)*height; var timeNum = [3,10,6,10,6,10]; var position = []; var NumberBoxs = []; for(var i =0;i<10;i++){ position.push((1-i)*height); }; function NumberBox() {} NumberBox.prototype = { init : function () { var innerHTML = "<div class='box' id='box"+num+"'><ul>" this.num = num; num++; for(var i =0,l=timeNum[this.num];i<l;i++){ innerHTML += "<li style='color:"+colors[i]+"'>"+i+"</li>"; } innerHTML += "</ul><div>" content.innerHTML += innerHTML; if(num==2||num==4){content.innerHTML += "<div class='colon'>:</div>"} }, dominit : function(){ this.Ali = [].slice.call(document.getElementById('box'+this.num).getElementsByTagName('li'),0); this.Ali.forEach(function(dom,i){ dom.style.top = position[i] + "px"; dom.style.transition = "top .8s"; }) this.hasdom = true; }, toNum : function (n) { if(!this.hasdom){this.dominit();} n = ""+n; var p = this; var l = p.Ali.length-1; while(p.Ali[1].innerHTML!=n){ p.Ali.unshift(p.Ali.pop()); } p.Ali.forEach(function (dom,i) { dom.style.zIndex = (i==l)?"-1":"1"; dom.style.top = position[i] + "px"; }) } } for(var i=0;i<6;i++){ var o = new NumberBox(); o.init(); NumberBoxs.push(o); } function getTime() { var time = new Date(); return (""+Fixed2(time.getHours())+Fixed2(time.getMinutes())+Fixed2(time.getSeconds())).split(""); } function Fixed2(n){ return Number(n)<10?"0"+n:n; } (function () { var time = getTime(); NumberBoxs.forEach(function(obj,i){ obj.toNum(time[i]); }); setTimeout(arguments.callee,1000); })() })(); </script></body></html>

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