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利用CSS3实现简书中点击“喜欢”时的动画
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Like</title>
<style>
#like {
background: #EA6F5A;
color: #fff;
padding: 13px 0 15px 0;
font-size: 19px;
border: 1px solid #EA6F5A;
border-radius: 40px;
width: 100px;
position: relative;
padding-left: 20px;
cursor: pointer;
text-align: center;
}
.like::before {
content: '';
position: absolute;
left: 5px;
top: 2px;
width: 50px;
height: 50px;
background-image: url(https://cdn2.jianshu.io/assets/web/like_animation_steps-62a00a7b52377d3069927cdb8e61fd34.png);
background-position: left;
background-repeat: no-repeat;
background-size: 1000px 50px;
background-position: right;
animation: like 0.6s 1 steps(19);
}
@keyframes like{
0% {
background-position: left;
}
100% {
background-position: right;
}
}
</style>
</head>
<body>
<div class="like" onclick="like()" id="like">喜欢</div> <script>
function like() {
let like = document.querySelector('#like');
console.log(like.classList);
if (like.classList.length == 0) {
like.className = 'like';
} else {
like.className = '';
}
}
</script>
</body>
</html>
