Javascript脚本特效示例：[17]纯JS时钟
1、在桌机上新建文本文档，命名为晓博JavaScript特效测试.txt，在文本文档里中入HTML文档的基本元素如下，并保存。
<html>
<head>
<title>晓博JavaScript特效测试</title>
</head>
<body>
<div id="zy">
<div id="login"></div>
<div id="daohang">
<ul>
<li><a href="index.html">首页</a></li>
<li><a href="jianjie.html">七夕简介</a></li>
<li><a href="#">七夕节传说</a></li>
<li><a href="#">七夕节习俗</a></li>
<li><a href="#">诗词& 歌谣</a></li>
<li><a href="#">七夕节寄语</a></li>
</ul>
</div>
</div>
</body>
</html>
![Javascript脚本特效示例：[17]纯JS时钟](https://exp-picture.cdn.bcebos.com/07c98f2ca5cadce868c50948fcf7980e5e209521.jpg)
![Javascript脚本特效示例：[17]纯JS时钟](https://exp-picture.cdn.bcebos.com/76b6860e5f204371a1563f94323acd8921c58f21.jpg)
2、第一步:把如下代码加入<head>区域中:
<SCRIPT language=javascript>
<!--
pX=400;pY=200
obs = new Array(13)
function ob () {
for (i=0; i<13; i++) {
if (document.all) obs[i]=new Array (eval('ob'+i).style,-100,-100)
else obs[i] = new Array (eval('document.ob'+i),-100,-100)
}
}
function cl(a,b,c){
if (document.all) {
if (a!=0) b+=-1
eval('c'+a+'.style.pixelTop='+(pY+(c)))
eval('c'+a+'.style.pixelLeft='+(pX+(b)))
}
else{
if (a!=0) b+=10
eval('document.c'+a+'.top='+(pY+(c)))
eval('document.c'+a+'.left='+(pX+(b)))
}
if (document.all) c0.style.pixelLeft=26
}
function runClock() {
for (i=0; i<13; i++) {
obs[i][0].left=obs[i][1]+pX
obs[i][0].top=obs[i][2]+pY
}
}
var lastsec
function timer() {
time = new Date ()
sec = time.getSeconds()
if (sec!=lastsec) {
lastsec = sec
sec=Math.PI*sec/30
min=Math.PI*time.getMinutes()/30
hr =Math.PI*((time.getHours()*60)+time.getMinutes())/360
for (i=1;i<6;i++) {
obs[i][1] = Math.sin(sec) * (44 - (i-1)*11)-16;
if (document.layers)obs[i][1]+=10;
obs[i][2] = -Math.cos(sec) * (44 - (i-1)*11)-27;
}
for (i=6;i<10;i++) {
obs[i][1] = Math.sin(min) * (40 - (i-6)*10)-16;
if (document.layers)obs[i][1]+=10;
obs[i][2] = -Math.cos(min) * (40 - (i-6)*10)-27;
}
for (i=10;i<13;i++) {
obs[i][1] = Math.sin(hr) * (37 - (i-10)*11)-16;
if (document.layers)obs[i][1]+=10;
obs[i][2] = -Math.cos(hr) * (37 - (i-10)*11)-27;
}
}
}
function setNum(){
cl (0,-67,-65);
cl (1,10,-51);
cl (2,28,-33);
cl (3,35,-8);
cl (4,28,17);
cl (5,10,35);
cl (6,-15,42);
cl (7,-40,35);
cl (8,-58,17);
cl (9,-65,-8);
cl (10,-58,-33);
cl (11,-40,-51);
cl (12,-16,-56);
}
//-->
</SCRIPT>
3、第二步:把<body>中加入如下代码：
<div id="c0" style="position:absolute;right:6;top:6; z-index:2;">
</div>
<div id="c1" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>1</b></div>
<div id="c2" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>2</b></div>
<div id="c3" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>3</b></div>
<div id="c4" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>4</b></div>
<div id="c5" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>5</b></div>
<div id="c6" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>6</b></div>
<div id="c7" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>7</b></div>
<div id="c8" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>8</b></div>
<div id="c9" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>9</b></div>
<div id="c10" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>10</b></div>
<div id="c11" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>11</b></div>
<div id="c12" style="position:absolute;left:20;top:-20; z-index:5;font-size:11px;"><b>12</b></div>
<div id="ob0" style="position:absolute;left:-20;top:-20;z-index:1"> </div>
<div id="ob1" style="position:absolute;left:-20;top:-20;z-index:8"> <font size="+3" color="#0000FF"><b>.</b></font></div>
<div id="ob2" style="position:absolute;left:-20;top:-20;z-index:8"> <font size="+3" color="#0000FF"><b>.</b></font></div>
<div id="ob3" style="position:absolute;left:-20;top:-20;z-index:8"> <font size="+3" color="#0000FF"><b>.</b></font></div>
<div id="ob4" style="position:absolute;left:-20;top:-20;z-index:8"> <font size="+3" color="#0000FF"><b>.</b></font></div>
<div id="ob5" style="position:absolute;left:-20;top:-20;z-index:8"> <font size="+3" color="#0000FF"><b>.</b></font></div>
<div id="ob6" style="position:absolute;left:-20;top:-20;z-index:7"> <font size="+3" color="#00FFFF"><b>.</b></font></div>
<div id="ob7" style="position:absolute;left:-20;top:-20;z-index:7"> <font size="+3" color="#00FFFF"><b>.</b></font></div>
<div id="ob8" style="position:absolute;left:-20;top:-20;z-index:7"> <font size="+3" color="#00FFFF"><b>.</b></font></div>
<div id="ob9" style="position:absolute;left:-20;top:-20;z-index:7"> <font size="+3" color="#00FFFF"><b>.</b></font></div>
<div id="ob10" style="position:absolute;left:-20;top:-20;z-index:6"> <font size="+3" color="#F30000"><b>.</b></font></div>
<div id="ob11" style="position:absolute;left:-20;top:-20;z-index:6"> <font size="+3" color="#F30000"><b>.</b></font></div>
<div id="ob12" style="position:absolute;left:-20;top:-20;z-index:6"> <font size="+3" color="#F30000"><b>.</b></font></div>
4、第三步：把<body>中内容改为,并重名文档为HTML文件
<body bgcolor="#fef4d9" onLoad="ob(),setNum(),setInterval('timer()',100);setInterval('runClock()',100)">
5、用IE浏览器打开晓博JavaScript特效测试.html文件，可以看到纯JavaScript时钟特效，如下图
![Javascript脚本特效示例：[17]纯JS时钟](https://exp-picture.cdn.bcebos.com/ccc83ec5260f8835d804506ace07880139708621.jpg)
![Javascript脚本特效示例：[17]纯JS时钟](https://exp-picture.cdn.bcebos.com/589f5b0788013870dfcf33382d08a50f95fc8321.jpg)