纯css实现星级评分效果

纯css实现超酷炫的星级评分动画效果，

实现思路：

1. 5个类型为radio的input，label标签修改样式背景图为星星
2. label标签给每个星星鼠标停留时加注名字
3. 点击星星有放大旋转的动画

dom结构，用form实现

<form>
	<div class="star">
		<input type="radio" id="rate5" name="rating" value="5">
		<label for="rate5" title="Amazing"></label>

		<input type="radio" id="rate4" name="rating" value="4">
		<label for="rate4" title="Good"></label>

		<input type="radio" id="rate3" name="rating" value="3">
		<label for="rate3" title="Average"></label>

		<input type="radio" id="rate2" name="rating" value="2">
		<label for="rate2" title="Not good"></label>

		<input type="radio" id="rate1" name="rating" value="1">
		<label for="rate1" title="Terrible"></label>
	</div>
</form>

css按步骤来实现，

1、星星图片样式

首先是星星图片嘛~

.star{
	display: block;
	position: relative;
	width: 150px;
	height: 60px;
	padding: 0;
	border: none;
}

.star > input{
	position: absolute;
	margin-right: -100%;
	opacity: 0;
}

.star > label{
	position: relative;
	display: inline-block;
	float: right;
	width: 30px;
	height: 30px;
	color: transparent;
	background-image: url("../rotate-star/images/starIcon.png");
	background-repeat: no-repeat;
}

2、点击星星的时候，灰星星变黄星星

.star > input:focus + label{
	outline: none;
}

.star > input:checked~label,
.star > input:focus~label,
.star > input:hover~label{
	background-position: 0 -30px; 
}

顺便把input点击的外边框去掉，巨丑

3、通过before伪元素，新增一个隐藏着的星星，来做旋转放大的动画

.star > label:before{
	display: none;
	position: absolute;
	content: " ";
	width: 30px;
	height: 30px;
	background-image: url("../rotate-star/images/starIcon.png");
	background-repeat: no-repeat;
	bottom: 0;
}

.star > input:checked + label:before{
	display: block;
	animation-name: rotateStar;
	animation-duration: 1s;
	animation-fill-mode: forwards;
}

@keyframes rotateStar{
	0%{
		transform: scale(1) rotate(0);
	}

	95%{
		transform: scale(4) rotate(90deg);
		opacity: 0;
	}

	100%{
		transform: scale(1) rotate(0);
		opacity: 0;
	}
}

OK，按着步骤来，你也可以在你的页面上实现酷炫的星级评分效果咯~