Home Web Front-end HTML Tutorial 控制CSS3 动画播放、暂停、重放_html/css_WEB-ITnose

控制CSS3 动画播放、暂停、重放_html/css_WEB-ITnose

Jun 21, 2016 am 08:53 AM

CSS3动画代码相对简单,在性能上会比JavaScript动画稍微好一些,浏览器会对CSS3动画做一些优化(比如专门新建一个图层用来跑动画)。但CSS3动画对动画控制上不够灵活的缺点也很明显。如何像控制视频播放一样控制CSS3动画播放、暂停、重放呢?下面实例是我本人的一个尝试。

先点击此处查看效果。

CSS3的动画中,动画元素的animation-play-state属性规定动画是否正在运行或暂停。属性值为paused可指定暂停动画,属性值为running可指定正在运行的动画。默认是 “running”。因此使用JavaScript动态改变这两个值就可以控制CSS3动画播放、暂停了。

控制CSS3动画重放相对麻烦一点,主要的思路将动画元素的动画样式先删除再添加,要注意将动画样式独立成一个类选择器,这样方便直接利用classList对象的方法进行删除添加操作。另外,删除添加是两个操作之间要有时间间隔,用setTimeout就可以实现了。

即使借助JavaScript,对CSS3动画的控制也是有限的。复杂些的效果还得使用JavaScript动画。

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