特效描述：原生js 图片时钟运行，原生js图片数字时钟运行，获取电脑本地时间时钟特效源代码。
代码结构
1. 引入JS
<script type="text/javascript" src="myself.js"></script> <script type="text/javascript" src="myself.js"></script>
2. HTML代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>时钟作业</title>
<style>
*{margin:0;padding:0;}
ul{list-style:none;}
#box{font-size: 60px;}
#time{padding:20px;border:1px solid #222;background:#fff;margin:100px auto;height:173px;width:984px;}
#time li{float:left;width:123px;height:173px;overflow:hidden;}
#time li .num_img{position:relative;top:0;}
#time img{display:block;}
</style>
</head>
<script type="text/javascript">
window.onload = function () {
var box = document.getElementById('box');
var time = document.getElementById('time');
var oLi = time.getElementsByTagName('li');
var len = oLi.length;
var timer = '';
var str = '';
var oldTime = getTime();
timeImg();
clearInterval(timer);
timer = setInterval(timeImg, 1000);
function getTime() {
var myTime = new Date(); //获取当前的系统时间
var myHour = myTime.getHours(); //时
var myMin = myTime.getMinutes(); //分
var mySec = myTime.getSeconds(); //秒
str = toTwo(myHour) + ':' + toTwo(myMin) + ':' + toTwo(mySec);
return str;
}
function toTwo(a) {
return a<10 ? '0'+a : ''+a;
}
function timeImg(){
getTime();
console.log(oldTime +'--'+ str);
// box.innerHTML = str;
for(var i=0; i<len; i++){
oLi[i].getElementsByTagName('div')[0].style.top = 0;
if(i==2 || i==5){
oLi[i].getElementsByTagName('img')[0].src = 'img/colon.jpg';
oLi[i].getElementsByTagName('img')[1].src = 'img/colon.jpg';
}else{
oLi[i].getElementsByTagName('img')[0].src = 'img/'+oldTime.charAt(i)+'.jpg';
if( oldTime.charAt(i) == 9 ){
oLi[i].getElementsByTagName('img')[1].src = 'img/0.jpg';
}else{
oLi[i].getElementsByTagName('img')[1].src = 'img/'+str.charAt(i)+'.jpg';
}
}
if(str.charAt(i) !== oldTime.charAt(i)){
doMove(oLi[i].getElementsByTagName('div')[0], 'top', 20, -173);
}
}
oldTime = str;
}
}
</script>
<body style="background:#ccc;">
<div id="box"></div>
<ul id="time">
<li><div class="num_img"><img src="img/0.jpg" alt=""><img src="img/0.jpg" alt=""></div></li>
<li><div class="num_img"><img src="img/0.jpg" alt=""><img src="img/0.jpg" alt=""></div></li>
<li><div class="num_img"><img src="img/0.jpg" alt=""><img src="img/0.jpg" alt=""></div></li>
<li><div class="num_img"><img src="img/0.jpg" alt=""><img src="img/0.jpg" alt=""></div></li>
<li><div class="num_img"><img src="img/0.jpg" alt=""><img src="img/0.jpg" alt=""></div></li>
<li><div class="num_img"><img src="img/0.jpg" alt=""><img src="img/0.jpg" alt=""></div></li>
<li><div class="num_img"><img src="img/0.jpg" alt=""><img src="img/0.jpg" alt=""></div></li>
<li><div class="num_img"><img src="img/0.jpg" alt=""><img src="img/0.jpg" alt=""></div></li>
</ul>
</body>
</html>
