CSS3 animation-timing-function 属性

定义和用法

animation-timing-function：指定动画速度曲线。

速度曲线定义动画从一套 CSS 样式变为另一套所用的时间。

速度曲线用于使变化更为平滑。

默认值:	ease
继承:	no
版本:	CSS3
JavaScript 语法:	object object.style.animationTimingFunction="linear"

语法

animation-timing-function: linear|ease|ease-in|ease-out|cubic-bezier(n,n,n,n);

值	描述	测试
linear	动画从开始到结束具有相同的速度。	测试
ease	动画有一个缓慢的开始，然后快，结束慢。	测试
ease-in	动画有一个缓慢的开始。	测试
ease-out	动画结束缓慢。	测试
ease-in-out	动画具有缓慢的开始和慢的结束。	测试
cubic-bezier(n,n,n,n)	在立方贝塞尔函数中定义速度函数。可能的值是从0到1的数字值。

提示: 请试着在下面的"尝试一下"功能中使用不同的值。

在线实例

实例

从开始到结束以相同的速度播放动画:

animation-timing-function:linear;
-webkit-animation-timing-function:linear; /* Safari and Chrome */

尝试一下 »
在此页底部有更多的例子。

实例

为了更好地理解不同的定时函数值，这里提供了设置五个不同值的五个不同的 div 元素：

/* W3C and Opera: */
#div1 {animation-timing-function: linear;}
#div2 {animation-timing-function: ease;}
#div3 {animation-timing-function: ease-in;}
#div4 {animation-timing-function: ease-out;}
#div5 {animation-timing-function: ease-in-out;}
/* Firefox: */
#div1 {-moz-animation-timing-function: linear;}
#div2 {-moz-animation-timing-function: ease;}
#div3 {-moz-animation-timing-function: ease-in;}
#div4 {-moz-animation-timing-function: ease-out;}
#div5 {-moz-animation-timing-function: ease-in-out;}
/* Safari and Chrome: */
#div1 {-webkit-animation-timing-function: linear;}
#div2 {-webkit-animation-timing-function: ease;}
#div3 {-webkit-animation-timing-function: ease-in;}
#div4 {-webkit-animation-timing-function: ease-out;}
#div5 {-webkit-animation-timing-function: ease-in-out;}

尝试一下 »

实例

与上例相同，但是通过 cubic-bezier 函数来定义速度曲线：

/* W3C and Opera: */
#div1 {animation-timing-function: cubic-bezier(0,0,1,1;}
#div2 {animation-timing-function: cubic-bezier(0.25,0.1,0.25,1);}
#div3 {animation-timing-function: cubic-bezier(0.42,0,1,1);}
#div4 {animation-timing-function: cubic-bezier(0,0,0.58,1);}
#div5 {animation-timing-function: cubic-bezier(0.42,0,0.58,1);}
/* Firefox: */
#div1 {-moz-animation-timing-function: cubic-bezier(0,0,1,1;}
#div2 {-moz-animation-timing-function: cubic-bezier(0.25,0.1,0.25,1);}
#div3 {-moz-animation-timing-function: cubic-bezier(0.42,0,1,1);}
#div4 {-moz-animation-timing-function: cubic-bezier(0,0,0.58,1);}
#div5 {-moz-animation-timing-function: cubic-bezier(0.42,0,0.58,1);}
/* Safari and Chrome: */
#div1 {-webkit-animation-timing-function: cubic-bezier(0,0,1,1;}
#div2 {-webkit-animation-timing-function: cubic-bezier(0.25,0.1,0.25,1);}
#div3 {-webkit-animation-timing-function: cubic-bezier(0.42,0,1,1);}
#div4 {-webkit-animation-timing-function: cubic-bezier(0,0,0.58,1);}
#div5 {-webkit-animation-timing-function: cubic-bezier(0.42,0,0.58,1);}

尝试一下 »

浏览器支持

属性
animation-timing-function	43.0 4.0 -webkit-	10.0	16.0 5.0 -moz-	9.0 4.0 -webkit-	30.0 15.0 -webkit- 12.0 -o-

CSS3 tutorial: CSS3 动画

CSS3 animation-timing-function 属性