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transition-timing-function - 过度效果加速度曲线 - css 过度

梵高1年前 (2023-11-21)阅读数 48#技术干货
文章标签属性

transition-timing-function

版本：CSS3

CSS属性受到transition effect的影响，会产生不断变化的中间值，而CSStransition-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。

示例

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

浏览器支持

IE10以上浏览器都支持transition-timing-function

语法

transition-timing-function:

取值

  • :通过transition-property中定义被过渡属性，每个的值代表与这个属性相对应的timing function.
  • linear：线性过渡。等同于 cubic-bezier(0.0, 0.0, 1.0, 1.0)
  • ease：平滑过渡。等同于 cubic-bezier(0.25, 0.1, 0.25, 1.0)
  • ease-in：由慢到快。等同于 cubic-bezier(0.42, 0, 1.0, 1.0)
  • ease-out：由快到慢。等同于 cubic-bezier(0, 0, 0.58, 1.0)
  • ease-in-out：由慢到快再到慢。等同于 cubic-bezier(0.42, 0, 0.58, 1.0)
  • step-start：等同于 steps(1, start)
  • step-end：等同于 steps(1, end)。
  • cubic-bezier(,,,)：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。

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。

默认值ease
适用于所有元素，包含伪对象::beforeand::after
继承性无
动画性否
计算值指定值
媒体交互

例子

transition-timing-function: ease

 
 
lorem
//CSS
.parent { width: 250px; height:125px;}
.box {
    width: 100px;
    height: 100px;
    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;
    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;
}


//JS

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

 
 
lorem
//CSS

.parent { width: 250px; height:125px;}
.box {
    width: 100px;
    height: 100px;
    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;
    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;
}

//JS

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

 
lorem
//CSS
.parent { width: 250px; height:125px;}
.box {
    width: 100px;
    height: 100px;
    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;
    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;
}

//CSS
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

 
 
lorem
 
.parent { width: 250px; height:125px;}
.box {
    width: 100px;
    height: 100px;
    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;
    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

 
 
lorem
//CSS
.parent { width: 250px; height:125px;}
.box {
    width: 100px;
    height: 100px;
    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;
    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;
}


//CSS

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

 
lorem
//CSS
.parent { width: 250px; height:125px;}
.box {
    width: 100px;
    height: 100px;
    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;
    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;
}

//CSS
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

 
lorem
//CSS
.parent { width: 250px; height:125px;}
.box {
    width: 100px;
    height: 100px;
    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;
    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;
}

//JS
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)

 
lorem
//CSS
.parent { width: 250px; height:125px;}
.box {
    width: 100px;
    height: 100px;
    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;
    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);
}

//JS
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;
-webkit-transition-timing-function:linear;/*safari and chrome*/

transition-timing-function - 过度效果加速度曲线 - css 过度

2、为了更好地理解不同的函数值：这里有五个不同的div元素，用5个不同的值：

实例

#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;}

3、和上面的例子一样，但指定速度曲线立方贝塞尔曲线函数：

实例

#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);}

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