transition-timing-function

定义

transition-timing-function属性指定切换效果的速度。

语法

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

属性值

值	说明
linear	规定以相同速度开始至结束的过渡效果（等于 cubic-bezier(0,0,1,1)）。
ease	规定慢速开始，然后变快，然后慢速结束的过渡效果（cubic-bezier(0.25,0.1,0.25,1)）。
ease-in	规定以慢速开始的过渡效果（等于 cubic-bezier(0.42,0,1,1)）。
ease-out	规定以慢速结束的过渡效果（等于 cubic-bezier(0,0,0.58,1)）。
ease-in-out	规定以慢速开始和结束的过渡效果（等于 cubic-bezier(0.42,0,0.58,1)）。
cubic-bezier(n,n,n,n)	在 cubic-bezier 函数中定义自己的值。可能的值是 0 至 1 之间的数值。

实例

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>NTHOME-零基础入门学习Web（HTML5+CSS3）</title>
    <style>
        div
        {
            width:100px;
            height:50px;
            background:green;
            color:white;
            font-weight:bold;
            transition:width 3s;
            /* Safari */
            -webkit-transition:width 3s;
        }
        #div1 {transition-timing-function: linear;}
        #div2 {transition-timing-function: ease;}
        #div3 {transition-timing-function: ease-in;}
        #div4 {transition-timing-function: ease-out;}
        #div5 {transition-timing-function: ease-in-out;}
        /* Safari */
        #div1 {-webkit-transition-timing-function: linear;}
        #div2 {-webkit-transition-timing-function: ease;}
        #div3 {-webkit-transition-timing-function: ease-in;}
        #div4 {-webkit-transition-timing-function: ease-out;}
        #div5 {-webkit-transition-timing-function: ease-in-out;}
        div:hover
        {
            width:333px;
        }
    </style>
</head>
<body>
    <p>将鼠标移至相应块上即可查看过渡动画.</p>
    <div id="div1" style="top:100px">linear</div>
    <div id="div2" style="top:150px">ease</div>
    <div id="div3" style="top:200px">ease-in</div>
    <div id="div4" style="top:250px">ease-out</div>
    <div id="div5" style="top:300px">ease-in-out</div>
</body>
</html>

将鼠标移至相应块上即可查看过渡动画.

linear

ease

ease-in

ease-out

ease-in-out

上面的效果用cubic-bezier(n,n,n,n)同理可实现：

#div1 {transition-timing-function: cubic-bezier(0,0,1,1;}
#div2 {transition-timing-function: cubic-bezier(0.25,0.1,0.25,1);}
#div3 {transition-timing-function: cubic-bezier(0.42,0,1,1);}
#div4 {transition-timing-function: cubic-bezier(0,0,0.58,1);}
#div5 {transition-timing-function: cubic-bezier(0.42,0,0.58,1);}
/* Safari */
#div1 {-webkit-transition-timing-function: cubic-bezier(0,0,1,1;}
#div2 {-webkit-transition-timing-function: cubic-bezier(0.25,0.1,0.25,1);}
#div3 {-webkit-transition-timing-function: cubic-bezier(0.42,0,1,1);}
#div4 {-webkit-transition-timing-function: cubic-bezier(0,0,0.58,1);}
#div5 {-webkit-transition-timing-function: cubic-bezier(0.42,0,0.58,1);}

浏览器支持

表格中的数字表示支持该属性的第一个浏览器版本号。

Safari	Chrome	FireFox	IE
4.0	12.0	10.0	11.0