<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
@keyframes move {
0%,
100% {
width: 12rem;
}
50% {
width: 20rem;
}
}
body {
background-color: #222;
}
.group {
margin: auto;
width: 25rem;
height: 25rem;
text-align: left;
}
.box {
position: absolute;
white-space: nowrap;
top: 50%;
width: 20rem;
}
.ball {
display: inline-block;
width: .75rem;
height: .75rem;
border-radius: 100%;
}
.bar {
display: inline-block;
height: .75rem;
animation: move 2s ease-in-out infinite;
}
</style>
</head>
<body>
<div class="container">
<div id="group" class="group">
</div>
</div>
</body>
<script>
var group = document.getElementById('group'); // 无脚本一样可以良好展示，但是得多写好多重复代码，而且不好改
for (var i = 0; i < 18; i++) {
var ball = document.createElement('div');
ball.className = 'ball';
ball.setAttribute('style', `background-color: hsl(${i * 20},100%,50%)`)
var bar = document.createElement('div');
bar.className = 'bar';
bar.setAttribute('style', `animation-delay: -${i / 3}s;`)
var box = document.createElement('div');
box.className = 'box';
box.setAttribute('style', `transform: rotate(${i * 20}deg);`)
box.appendChild(bar);
box.appendChild(ball);
group.appendChild(box);
}
</script>
</html>
