transition-timing-function

语法：

默认值：ease

适用于：所有元素，包含伪对象:after和:before

继承性：无

取值：

animation-timing-function 使用名为三次贝塞尔（Cubic Bezier）函数的数学函数，来生成速度曲线。您能够在该函数中使用自己的值，也可以预定义的值：

linear：: 线性过渡。等同于贝塞尔曲线(0.0, 0.0, 1.0, 1.0)
ease：: 平滑过渡。等同于贝塞尔曲线(0.25, 0.1, 0.25, 1.0)
ease-in：: 由慢到快。等同于贝塞尔曲线(0.42, 0, 1.0, 1.0)
ease-out：: 由快到慢。等同于贝塞尔曲线(0, 0, 0.58, 1.0)
ease-in-out：: 由慢到快再到慢。等同于贝塞尔曲线(0.42, 0, 0.58, 1.0)
cubic-bezier(<number>, <number>, <number>, <number>)：: 特定的贝塞尔曲线类型，4个数值需在[0, 1]区间内

说明：

检索或设置对象中过渡的动画类型。

如果提供多个属性值，以逗号进行分隔。
对应的脚本特性为transitionTimingFunction。

兼容性：

浅绿 = 支持
红色 = 不支持
墨绿 = 部分支持
橙色 = 实验性质

支持版本\类型	IE	Firefox	Safari	Chrome	Opera
版本	6-9	4-18	5.1.7	13-23	11.5-12.5
版本	10	4-18	5.1.7	13-23	11.5-12.5

示例：

<!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="utf-8" />
<title>transition-timing-function_CSS参考手册_web前端开发参考手册系列</title>
<meta name="author" content="Joy Du(飘零雾雨), dooyoe@gmail.com, www.doyoe.com" />
<style>
h1{font-size:16px;}
.test{overflow:hidden;width:100%;margin:0;padding:0;list-style:none;}
.test li{padding:10px;margin:1px 5px;}
.test li p{position:relative;left:8px;width:220px;height:100px;margin:0;border:1px solid #ddd;background-color:#eee;color:#000;
    -webkit-transition-property: left;
       -moz-transition-property: left;
        -ms-transition-property: left;
         -o-transition-property: left;
            transition-property: left;
    -webkit-transition-duration: .5s;
       -moz-transition-duration: .5s;
        -ms-transition-duration: .5s;
         -o-transition-duration: .5s;
            transition-duration: .5s;
}
.test li:nth-child(1) p {
-webkit-transition-timing-function: linear;
   -moz-transition-timing-function: linear;
    -ms-transition-timing-function: linear;
     -o-transition-timing-function: linear;
        transition-timing-function: linear;
}
.test li:nth-child(2) p {
-webkit-transition-timing-function: ease;
   -moz-transition-timing-function: ease;
    -ms-transition-timing-function: ease;
     -o-transition-timing-function: ease;
        transition-timing-function: ease;
}
.test li:nth-child(3) p {
-webkit-transition-timing-function: ease-in;
   -moz-transition-timing-function: ease-in;
    -ms-transition-timing-function: ease-in;
     -o-transition-timing-function: ease-in;
        transition-timing-function: ease-in;
}
.test li:nth-child(4) p {
-webkit-transition-timing-function: ease-out;
   -moz-transition-timing-function: ease-out;
    -ms-transition-timing-function: ease-out;
     -o-transition-timing-function: ease-out;
        transition-timing-function: ease-out;
}
.test li:nth-child(5) p {
-webkit-transition-timing-function: ease-in-out;
   -moz-transition-timing-function: ease-in-out;
    -ms-transition-timing-function: ease-in-out;
     -o-transition-timing-function: ease-in-out;
        transition-timing-function: ease-in-out;
}
.test li:hover p{left:70%;}
</style>
</head>
<body>
<h1>请将鼠标移动到下面的矩形上：</h1>
<ul class="test">
	<li><p>linear: 线性过渡<br>动画从头到尾的速度是相同的</p></li>
	<li><p>ease: 平滑过渡<br>动画以低速开始，然后加快，在结束前变慢</p></li>
	<li><p>ease-in: 由慢到快</p></li>
	<li><p>ease-out: 由快到慢</p></li>
	<li><p>ease-in-out: 由慢到快再到慢</p></li>
</ul>
</body>
</html>