css3实现钟表效果的方法
程序员文章站
2022-04-13 07:58:39
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利用css3 transform属性刻画钟表的的刻度以及指针的角度,代码如下：
<head>
<meta charset="UTF-8">
<title>Title</title>
<style id="style">
html{height:100%;}
body {
width:100%;
height:100%;
margin:0;
display:-moz-box;
display:-webkit-box;
display:box;
-webkit-box-align: center;
-moz-box-align: center;
box-align:center;
-webkit-box-pack:center;
-moz-box-pack:center;
box-pack:center;
}
.clock {
width:200px;
height:200px;
border:4px solid black;
border-radius:50%;
position:relative;
}
.clock ul {
width:100%;
height:100%;
position:relative;
margin:0;
padding:0;
}
.clock ul li {
list-style: none;
position:absolute;
top:0;
left:99px;
width:2px;
height:5px;
background:gray;
transform-origin: center 100px;
}
.clock ul li:nth-of-type(5n+1) {
left:98px;
width:4px;
height:10px;
background:black;
}
.hour {
width:8px;
height:60px;
border-radius:4px;
position:absolute;
left:96px;
top:40px;
background-color:black;
transform-origin: center 60px;
box-shadow:0 0 10px rgba(0,0,0,0.8);
}
.min {
width:6px;
height:70px;
border-radius:3px;
position:absolute;
left:97px;
top:30px;
background-color:#2b2b2b;
transform-origin: center 70px;
box-shadow:0 0 10px rgba(0,0,0,0.6);
}
.sec {
width:4px;
height:80px;
border-radius:2px;
position:absolute;
left:98px;
top:20px;
background-color:red;
transform-origin: center 80px;
box-shadow:0 0 10px rgba(255,0,0,0.5);
}
.center {
width:16px;
height:16px;
box-shadow:0 2px 5px rgba(0,0,0,0.5);
border-radius:50%;
position:absolute;
left:92px;
top:92px;
background-image: radial-gradient(white,gray);
}
</style>
</head>
<body>
<p class="clock">
<ul id="tickBox">
</ul>
<p class="hour" id="hour"></p>
<p class="min" id="min"></p>
<p class="sec" id="sec"></p>
<p class="center"></p>
</p>
<script>
window.onload = function(){
var oUl = document.getElementById("tickBox");
var oStyle = document.getElementById("style");
var liStr = "";
var styleStr = "";
for(var i=0;i<60;i++){
styleStr += '.clock ul li:nth-of-type('+(i+1)+'){transform: rotate('+i*6+'deg);}';
liStr += '<li></li>';
}
oStyle.innerHTML += styleStr;
oUl.innerHTML = liStr;
var oHour = document.getElementById("hour");
var oMin = document.getElementById("min");
var oSec = document.getElementById("sec");
function getTime(){
var timer = new Date();
var sec = timer.getSeconds();
var min = timer.getMinutes();
var hour = timer.getHours();
var tranS = sec*360/60;
var tranM = (min+sec/60)*360/60;
var tranH = (hour + min/60)*360/12;
oSec.style.transform = 'rotate('+tranS+'deg) translateZ(-1px)';
oMin.style.transform = 'rotate('+tranM+'deg) translateZ(-1px)';
oHour.style.transform = 'rotate('+tranH+'deg) translateZ(-1px)';
}
setInterval(getTime,1000);
getTime();
}
</script>
</body>
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