效果如下：
代码很简单，我就直接上代码了：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
*{
margin: 0;padding: 0;
}
.bp{
width: 200px;height: 200px;border: 1px solid black;border-radius: 100%;margin: 50px auto;position: relative;
}
.kedu{
width: 1px;height: 10px;background: black;position: absolute;left: 100px;top: 0px;transform-origin: 0px 100px;
}
.shuzi{
position: absolute;width: 10px;font-size: 10px;height: 85px;transform-origin:bottom ;top: 15px;left: 95px;
}
.scd{
width: 1px;height: 70px;position: absolute;left: 100px;top: 30px;transform-origin:bottom;background: red;
}
.min{
width: 2px;height: 60px;position: absolute;left: 99px;top: 40px;transform-origin:bottom;background: black;
}
.hour{
width: 3px;height: 50px;position: absolute;left: 98.5px;top: 50px;transform-origin:bottom;background: black;
}
</style>
</head>
<body>
<div class="bp">
<div class="hour"></div>
<div class="min"></div>
<div class="scd"></div>
</div>
</body>
<script type="text/javascript">
var bp = document.querySelector(".bp");
var h = document.querySelector(".hour");
var m = document.querySelector(".min");
var s = document.querySelector(".scd");
var date = new Date();
var hours = date.getHours();
var min = date.getMinutes();
var scd = date.getSeconds();
var hk = hours*30+min*0.5;
h.style.transform = "rotateZ("+hk+"deg)";
m.style.transform = "rotateZ("+min*6+"deg)";
s.style.transform = "rotateZ("+scd*6+"deg)";
for (var i = 0 ; i < 60 ; i++) {
var kd = document.createElement("div");
kd.className="kedu";
bp.appendChild(kd);
}
for (var i = 0 ; i < 12 ; i++) {
var shuzi = document.createElement("div");
shuzi.className="shuzi"
shuzi.style.transform = "rotateZ("+(i+1)*30+"deg)";
var num = document.createElement("div");
num.innerHTML = i+1;
num.style.textAlign = "center";
num.style.transform = "rotateZ("+(i+1)*-30+"deg)";
shuzi.appendChild(num)
bp.appendChild(shuzi)
}
function keduchi(){
var kds = document.querySelectorAll(".kedu");
for (var i = 0 ; i < kds.length ; i++) {
kds[i].style.transform = 'rotateZ('+6*i+'deg)';
if (i%5==0) {
kds[i].style.height = 15+"px"
}
}
}
keduchi()
var md = 0;
setInterval(function(){
var date2 = new Date();
var ss = date2.getSeconds();
if (ss%60==0) {
md++;
var mds = min*6+6*md;
m.style.transform="rotateZ("+mds+"deg)";
var hds = hk+0.5*md;
h.style.transform="rotateZ("+hds+"deg)";
}
s.style.transform="rotateZ("+ss*6+"deg)";
},1000)
</script>
</html>
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