jquery心形点赞关注效果的简单实现

<div class="stage">
<div class="heart"></div>
</div>

.heart {
width: 100px;
height: 100px;
background: url("") no-repeat;
background-position: 0 0;
cursor: pointer;
-webkit-transition: background-position 1s steps(28);
transition: background-position 1s steps(28);
-webkit-transition-duration: 0s;
transition-duration: 0s;
}
.heart.is-active {
-webkit-transition-duration: 1s;
transition-duration: 1s;
background-position: -2800px 0;
}

body {
background: -webkit-linear-gradient(315deg, #121721 0%, #000000 100%) fixed;
background: linear-gradient(135deg, #121721 0%, #000000 100%) fixed;
color: #FFF;
font: 300 16px/1.5 "Open Sans", sans-serif;
}

.stage {
position: fixed;
top: 50%;
left: 50%;
-webkit-transform: translate(-50%, -50%);
transform: translate(-50%, -50%);
}

$(function() {
$(".heart").on("click", function() {
$(this).toggleClass("is-active");
});
});

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