效果图展示
image.png
下面是实现代码
<!DOCTYPE html>
<meta charset="utf-8">
<html>
<head>
<title></title>
<style type="text/css">
*{
margin: 0;
padding: 0;
}
.box {
border: 1px solid #ccc;
width: 200px;
height: 200px;
margin: 100px auto;
position: relative;
line-height: 200px;
text-align: center;
box-sizing: border-box;
}
/*把整个盒子分成两个部分，通过overflow:hidden进行显示隐藏*/
.left,.right {
position: absolute;
top: 0;
width: 100px;
height: 200px;
overflow: hidden;
}
.left {
left: 0;
}
.right {
right: 0;
}
/*进度条的底色部分*/
.progress {
width: 160px;
height: 160px;
border: 20px solid #a4ccfb;
border-radius: 50%;
position: absolute;
top: 0;
}
.progress-left {
border-top: 20px solid #09c;
border-right: 20px solid #09c;
left: 0;
-webkit-animation: run1 10s linear infinite;
}
@keyframes run1 {
0% {
-webkit-transform: rotate(45deg);
}
50% {
-webkit-transform: rotate(45deg);
}
100% {
-webkit-transform: rotate(225deg);
}
}
.progress-right {
border-bottom: 20px solid #09c;
border-left: 20px solid #09c;
right: 0;
-webkit-animation: run 10s linear infinite;
}
@keyframes run {
0% {
-webkit-transform: rotate(45deg);
}
50% {
-webkit-transform: rotate(225deg);
}
100% {
-webkit-transform: rotate(225deg);
}
}
.num {
font-size: 20px;
}
</style>
</head>
<body>
<div class="box">
<div class="left">
<div class="progress progress-left"></div>
</div>
<div class="right">
<div class="progress progress-right"></div>
</div>
<div class="num"><span id="num">0</span>%</div>
</div>
<script type="text/javascript">
var num = document.getElementById("num");
var i = 0;
function addNum(){
i++;
if(i>100){
i = 0;
}
num.innerHTML = i;
}
setInterval(addNum,100);
</script>
</body>
</html>
