过渡时间 | transition-duration

过渡时期

transition-duration 属性以秒或毫秒为单位指定过渡动画所需的时间。默认值为 0s ，表示不出现过渡动画。

可以指定多个时长，每个时长会被应用到由 transition-property指定的对应属性上。如果指定的时长个数小于属性个数，那么时长列表会重复。如果时长列表更长，那么该列表会被裁减。两种情况下，属性列表都保持不变。

/* <time> values */
transition-duration: 6s;
transition-duration: 120ms;
transition-duration: 1s, 15s;
transition-duration: 10s, 30s, 230ms;

/* Global values */
transition-duration: inherit;
transition-duration: initial;
transition-duration: unset;

初始值	0s
适用元素	all elements, ::before and ::after pseudo-elements
是否是继承属性	no
适用媒体	interactive
计算值	as specified
Animation type	discrete
正规顺序	the unique non-ambiguous order defined by the formal grammar

语法

值

<time><time>类型。表示过渡属性从旧的值转变到新的值所需要的时间。如果时长是 0s ，表示不会呈现过渡动画，属性会瞬间完成转变。不接受负值。

形式语法

<time>#

示例

transition-duration: 0.5s

 <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 transform -webkit-transform color;
    -webkit-transition-duration:0.5s;
    -webkit-transition-timing-function: ease-in-out;
    transition-property: width height background-color font-size left top transform -webkit-transform color;
    transition-duration:0.5s;
    transition-timing-function: ease-in-out;
}
.box1{
    transform: rotate(270deg
    -webkit-transform: rotate(270deg
    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 transform -webkit-transform color;
    -webkit-transition-duration:0.5s;
    -webkit-transition-timing-function: ease-in-out;
    transition-property: width height background-color font-size left top transform -webkit-transformv color;
    transition-duration:0.5s;
    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-duration: 1s

 <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 -webkit-transform color;
    -webkit-transition-duration:1s;
    -webkit-transition-timing-function: ease-in-out;
    transition-property: width height background-color font-size left top transform color;
    transition-duration:1s;
    transition-timing-function: ease-in-out;
}
.box1{
    transform: rotate(270deg
    -webkit-transform: rotate(270deg
    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 -webkit-transform transform color;
    -webkit-transition-duration:1s;
    -webkit-transition-timing-function: ease-in-out;
    transition-property: width height background-color font-size left top transform -webkit-transform color;
    transition-duration:1s;
    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-duration: 2s

 <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 transform -webkit-transform color;
    -webkit-transition-duration:2s;
    -webkit-transition-timing-function: ease-in-out;
    transition-property: width height background-color font-size left top transform -webkit-transform color;
    transition-duration:2s;
    transition-timing-function: ease-in-out;
}
.box1{
    transform: rotate(270deg
    -webkit-transform: rotate(270deg
    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 transform -webkit-transform color;
    -webkit-transition-duration:2s;
    -webkit-transition-timing-function: ease-in-out;
    transition-property: width height background-color font-size left top transform -webkit-transform 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-duration: 4s

 <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 transform -webkit-transform color;
    -webkit-transition-duration:4s;
    -webkit-transition-timing-function: ease-in-out;
    transition-property: width height background-color font-size left top transform -webkit-transform color;
    transition-duration:4s;
    transition-timing-function: ease-in-out;
}
.box1{
    transform: rotate(270deg
    -webkit-transform: rotate(270deg
    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 transform -webkit-transform color;
    -webkit-transition-duration:4s;
    -webkit-transition-timing-function: ease-in-out;
    transition-property: width height background-color font-size left top transform -webkit-transform color;
    transition-duration:4s;
    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

规范

Specification	Status	Comment
CSS TransitionsThe definition of 'transition-duration' in that specification.	Working Draft	Initial definition

浏览器兼容性

Feature	Chrome	Edge	Firefox (Gecko)	Internet Explorer	Opera	Safari
Basic support	1.0 -webkit (Yes)	(Yes)-webkit (Yes)	4.0 (2.0) -moz 16.0 (16.0)1	10.0	11.6 -o 12.10 #	3.0 -webkit

Feature	Android	Edge	Firefox Mobile (Gecko)	IE Mobile	Opera Mobile	Safari Mobile
Basic support	2.1 -webkit	(Yes)-webkit (Yes)	4.0 (2.0) -moz 16.0 (16.0)1	?	10.0 -o 12.10 #	3.2 -webkit

除了支持无前缀外，Gecko 44.0（Firefox 44.0 / Thunderbird 44.0 / SeaMonkey 2.41）还增加了对该属性的-webkit前缀版本的支持，以解决layout.css.prefixes.webkit首选项（默认为false）的Web兼容性问题，因为Gecko 49.0（Firefox 49.0 / Thunderbird 49.0 / SeaMonkey 2.46），首选项默认为true。