这是一个实验中的功能 此功能某些浏览器尚在开发中,请参考浏览器兼容性表格 以得到在不同浏览器中适合使用的前缀。由于该功能对应的标准文档可能被重新修订,所以在未来版本的浏览器中该功能的语法和行为可能随之改变。
概述
CSS属性受到 transition effect 的影响,会产生不断变化的中间值,而 CSS transition-timing-function
属性用来描述这个中间值是怎样计算的。实质上,通过这个函数会建立一条加速度曲线,因此在整个transition变化过程中,变化速度可以不断改变。
这条加速度曲线被<timing-function>
所定义,之后作用到每个CSS属性的过渡.
你可以规定多个timing function,通过使用 transition-property
属性,可以根据主列表(transition property的列表)给每个CSS属性应用相应的timing function.如果timing function的个数比主列表中数量少,缺少的值被设置为初始值(ease) 。如果timing function比主列表要多,timing function函数列表会被截断至合适的大小。这两种情况下声明的CSS属性都是有效的。
语法
Formal syntax : <timing-function> #
transition-timing-function: ease
transition-timing-function: ease-in
transition-timing-function: ease-out
transition-timing-function: ease-in-out
transition-timing-function: linear
transition-timing-function: cubic-bezier(0.1, 0.7, 1.0, 0.1)
transition-timing-function: step-start
transition-timing-function: step-end
transition-timing-function: steps(4, end)
transition-timing-function: ease, step-start, cubic-bezier(0.1, 0.7, 1.0, 0.1)
transition-timing-function: inherit
值
<timing-function>
通过transition-property
中定义被过渡属性,每个 <timing-function>
的值代表与这个属性相对应的timing function.
示例
transition-timing-function: ease
<div class="parent">
<div class="box">Lorem</div>
</div>
.parent { width: 250px; height:125px;}
.box {
width: 100px;
height: 100px;
background-color: red;
font-size: 20px;
left: 0px;
top: 0px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: ease;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: ease;
}
.box1{
width: 50px;
height: 50px;
background-color: blue;
color: yellow;
font-size: 18px;
left: 150px;
top:25px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: ease;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: ease;
}
function updateTransition() {
var el = document.querySelector("div.box");
if (el) {
el.className = "box1";
} else {
el = document.querySelector("div.box1");
el.className = "box";
}
return el;
}
var intervalID = window.setInterval(updateTransition, 7000);
transition-timing-function: ease-in
<div class="parent">
<div class="box">Lorem</div>
</div>
.parent { width: 250px; height:125px;}
.box {
width: 100px;
height: 100px;
background-color: red;
font-size: 20px;
left: 0px;
top: 0px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: ease-in;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: ease-in;
}
.box1{
width: 50px;
height: 50px;
background-color: blue;
color: yellow;
font-size: 18px;
left: 150px;
top:25px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: ease-in;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: ease-in;
}
function updateTransition() {
var el = document.querySelector("div.box");
if (el) {
el.className = "box1";
} else {
el = document.querySelector("div.box1");
el.className = "box";
}
return el;
}
var intervalID = window.setInterval(updateTransition, 7000);
transition-timing-function: ease-out
<div class="parent">
<div class="box">Lorem</div>
</div>
.parent { width: 250px; height:125px;}
.box {
width: 100px;
height: 100px;
background-color: red;
font-size: 20px;
left: 0px;
top: 0px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: ease-out;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: ease-out;
}
.box1{
width: 50px;
height: 50px;
background-color: blue;
color: yellow;
font-size: 18px;
left: 150px;
top:25px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: ease-out;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: ease-out;
}
function updateTransition() {
var el = document.querySelector("div.box");
if (el) {
el.className = "box1";
} else {
el = document.querySelector("div.box1");
el.className = "box";
}
return el;
}
var intervalID = window.setInterval(updateTransition, 7000);
transition-timing-function: ease-in-out
<div class="parent">
<div class="box">Lorem</div>
</div>
.parent { width: 250px; height:125px;}
.box {
width: 100px;
height: 100px;
background-color: red;
font-size: 20px;
left: 0px;
top: 0px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: ease-in-out;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: ease-in-out;
}
.box1{
width: 50px;
height: 50px;
background-color: blue;
color: yellow;
font-size: 18px;
left: 150px;
top:25px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: ease-in-out;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: ease-in-out;
}
function updateTransition() {
var el = document.querySelector("div.box");
if (el) {
el.className = "box1";
} else {
el = document.querySelector("div.box1");
el.className = "box";
}
return el;
}
var intervalID = window.setInterval(updateTransition, 7000);
transition-timing-function: linear
<div class="parent">
<div class="box">Lorem</div>
</div>
.parent { width: 250px; height:125px;}
.box {
width: 100px;
height: 100px;
background-color: red;
font-size: 20px;
left: 0px;
top: 0px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: linear;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: linear;
}
.box1{
width: 50px;
height: 50px;
background-color: blue;
color: yellow;
font-size: 18px;
left: 150px;
top:25px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: linear;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: linear;
}
function updateTransition() {
var el = document.querySelector("div.box");
if (el) {
el.className = "box1";
} else {
el = document.querySelector("div.box1");
el.className = "box";
}
return el;
}
var intervalID = window.setInterval(updateTransition, 7000);
transition-timing-function: step-start
<div class="parent">
<div class="box">Lorem</div>
</div>
.parent { width: 250px; height:125px;}
.box {
width: 100px;
height: 100px;
background-color: red;
font-size: 20px;
left: 0px;
top: 0px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: step-start;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: step-start;
}
.box1{
width: 50px;
height: 50px;
background-color: blue;
color: yellow;
font-size: 18px;
left: 150px;
top:25px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: step-start;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: step-start;
}
function updateTransition() {
var el = document.querySelector("div.box");
if (el) {
el.className = "box1";
} else {
el = document.querySelector("div.box1");
el.className = "box";
}
return el;
}
var intervalID = window.setInterval(updateTransition, 7000);
transition-timing-function: step-end
<div class="parent">
<div class="box">Lorem</div>
</div>
.parent { width: 250px; height:125px;}
.box {
width: 100px;
height: 100px;
background-color: red;
font-size: 20px;
left: 0px;
top: 0px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: step-end;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: step-end;
}
.box1{
width: 50px;
height: 50px;
background-color: blue;
color: yellow;
font-size: 18px;
left: 150px;
top:25px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: step-end;
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: step-end;
}
function updateTransition() {
var el = document.querySelector("div.box");
if (el) {
el.className = "box1";
} else {
el = document.querySelector("div.box1");
el.className = "box";
}
return el;
}
var intervalID = window.setInterval(updateTransition, 7000);
transition-timing-function: steps(4, end)
<div class="parent">
<div class="box">Lorem</div>
</div>
.parent { width: 250px; height:125px;}
.box {
width: 100px;
height: 100px;
background-color: red;
font-size: 20px;
left: 0px;
top: 0px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: steps(4, end);
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: steps(4, end);
}
.box1{
width: 50px;
height: 50px;
background-color: blue;
color: yellow;
font-size: 18px;
left: 150px;
top:25px;
position:absolute;
-webkit-transition-property: width height background-color font-size left top color;
-webkit-transition-duration:2s;
-webkit-transition-timing-function: steps(4, end);
transition-property: width height background-color font-size left top color;
transition-duration:2s;
transition-timing-function: steps(4, end);
}
function updateTransition() {
var el = document.querySelector("div.box");
if (el) {
el.className = "box1";
} else {
el = document.querySelector("div.box1");
el.className = "box";
}
return el;
}
var intervalID = window.setInterval(updateTransition, 7000);
规范
浏览器兼容性
Feature
Chrome
Firefox (Gecko)
Internet Explorer
Opera
Safari
Basic support
(Yes) -webkit
4.0 (2.0)-moz
16.0 (16.0)
10
11.6-o
12.10 #
(Yes) -webkit
Feature
Android
Chrome for Android
Firefox Mobile (Gecko)
IE Mobile
Opera Mobile
Safari Mobile
Basic support
(Yes) -webkit
(Yes) -webkit
4.0 (2.0)-moz
16.0 (16.0)
?
?
(Yes) -webkit
参考
文档标签和贡献者
最后编辑者:
mrstork ,
Jan 28, 2016, 9:55:14 PM