效果预览
按下右侧的“点击预览”按钮可以在当前页面预览,点击链接可以全屏预览。
https://codepen.io/comehope/pen/oybWBy
可交互视频教程
此视频是可以交互的,你可以随时暂停视频,编辑视频中的代码。
请用 chrome, safari, edge 打开观看。
https://scrimba.com/p/pEgDAM/cG64puy
源代码下载
每日前端实战系列的全部源代码请从 github 下载:
https://github.com/comehope/front-end-daily-challenges
代码解读
定义 dom,容器中包含 5 个子元素:
<div class="equalizer">
<span></span>
<span></span>
<span></span>
<span></span>
<span></span>
</div>
居中显示:
body {
margin: 0;
height: 100vh;
display: flex;
align-items: center;
justify-content: center;
background-color: black;
}
定义均衡器的样式:
.equalizer {
width: 10em;
height: 10em;
display: flex;
justify-content: space-between;
} .equalizer span {
width: 1.5em;
background: linear-gradient(0deg, green, yellow, red);
}
定义均衡器竖条的动画效果:
.equalizer span {
animation: up-and-down 2s linear infinite;
} @keyframes up-and-down{
0%, 100% {
clip-path: inset(27% 0 0 0);
}10% {
clip-path: inset(17% 0 0 0);
} 20% {
clip-path: inset(55% 0 0 0);
} 30% {
clip-path: inset(30% 0 0 0);
} 40% {
clip-path: inset(13% 0 0 0);
} 50% {
clip-path: inset(38% 0 0 0);
} 60% {
clip-path: inset(80% 0 0 0);
} 70% {
clip-path: inset(21% 0 0 0);
} 80% {
clip-path: inset(0% 0 0 0);
} 90% {
clip-path: inset(36% 0 0 0);
}}
最后,设置各竖条依次动画:
.equalizer span {
animation: up-and-down 2s linear infinite calc(-1 * 0.4s * (var(--n) - 1));
} .equalizer span:nth-child(1) {
--n: 1;
} .equalizer span:nth-child(2) {
--n: 2;
} .equalizer span:nth-child(3) {
--n: 3;
} .equalizer span:nth-child(4) {
--n: 4;
} .equalizer span:nth-child(5) {
--n: 5;
}
大功告成!
原文地址:https://segmentfault.com/a/1190000015157160