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Example of how JavaScript implements a digital sliding clock effect

黄舟Original: 2017-08-13 10:29:241453browse

Example of how JavaScript implements digital sliding clock effect

<!DOCTYPE html>
<html>
<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>
    </div>
    <script type="text/javascript">
    (function(){
        var colors = ["#69D2E7", "#E20049", "#19215E", "#F38630", "#FA6900", "#FF4E50", "#F9D423", "#FFB6FF", "#474168", "#6ACAFC"];
        var content = document.querySelector(&#39;.content&#39;);
        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 id=&#39;box"+num+"&#39;><ul>"
                this.num = num;
                num++;
                for(var i =0,l=timeNum[this.num];i<l;i++){
                    innerHTML += "<li style=&#39;color:"+colors[i]+"&#39;>"+i+"</li>";
                }
                innerHTML += "</ul><div>"
                content.innerHTML += innerHTML;
                if(num==2||num==4){content.innerHTML += "<div>:</div>"}
            },
            dominit : function(){
                this.Ali = [].slice.call(document.getElementById(&#39;box&#39;+this.num).getElementsByTagName(&#39;li&#39;),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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