1,使用调速函数控制过渡效果的速度曲线(加速,减速等)
使用调速函数可以设置过渡效果的速度曲线,从而实现过渡效果随着时间来改变其速度。比如:开始很慢然后加速或者开始很快然后减速。
(1)CSS3定义了如下的调速函数:
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。
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。
(2)调速函数的使用
使用时只需要把调速函数跟在过渡属性的时间参数后面。如果不填的话则使用默认调速函数(ease)
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transition: opacity
10
s ease-in-out;
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(3)使用样例1:
下面通过样例演示各种调速函数的效果区别。鼠标移入方框,方框内的方块会向右移动,同时方块会旋转,边角变圆角,背景色和文字颜色也在改变。这些样式的改变都会有过渡效果,同时由于使用不同的调速函数,过渡的快慢也是有区别的。
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<!doctype html>
<
html
lang
=
"en"
>
<
head
>
<
title
>hangge.com</
title
>
<
style
>
.trans_box {
padding: 20px;
*zoom:1;
}
.trans_list {
width: 10%;
height: 64px;
margin:10px 0;
color:#fff;
text-align:center;
}
.linear {
-webkit-transition: all 4s linear;
-moz-transition: all 4s linear;
-o-transition: all 4s linear;
transition: all 4s linear;
}
.ease {
-webkit-transition: all 4s ease;
-moz-transition: all 4s ease;
-o-transition: all 4s ease;
transition: all 4s ease;
}
.ease_in {
-webkit-transition: all 4s ease-in;
-moz-transition: all 4s ease-in;
-o-transition: all 4s ease-in;
transition: all 4s ease-in;
}
.ease_out {
-webkit-transition: all 4s ease-out;
-moz-transition: all 4s ease-out;
-o-transition: all 4s ease-out;
transition: all 4s ease-out;
}
.ease_in_out {
-webkit-transition: all 4s ease-in-out;
-moz-transition: all 4s ease-in-out;
-o-transition: all 4s ease-in-out;
transition: all 4s ease-in-out;
}
.trans_box:hover .trans_list, .trans_box_hover .trans_list {
margin-left:89%;
color:#333;
-webkit-border-radius:25px;
-moz-border-radius:25px;
-o-border-radius:25px;
border-radius:25px;
-webkit-transform: rotate(360deg);
-moz-transform: rotate(360deg);
-o-transform: rotate(360deg);
transform: rotate(360deg);
}
</
style
>
</
head
>
<
div
id
=
"transBox"
class
=
"trans_box"
>
<
div
class
=
"trans_list ease"
>ease<
br
>(default)</
div
>
<
div
class
=
"trans_list ease_in"
>ease-in</
div
>
<
div
class
=
"trans_list ease_out"
>ease-out</
div
>
<
div
class
=
"trans_list ease_in_out"
>ease-in-out</
div
>
<
div
class
=
"trans_list linear"
>linear</
div
>
</
div
>
</
html
>
|
(4)使用样例2:
下面通过对柱状图的宽度改变过渡,演示不同调速函数的效果区别。
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<!DOCTYPE html>
<
html
>
<
head
>
<
style
>
div
{
margin:10px 0;
width:100px;
height:50px;
background:#2D9900;
color:white;
font-weight:bold;
transition:width 2s;
-moz-transition:width 2s; /* Firefox 4 */
-webkit-transition:width 2s; /* Safari and Chrome */
-o-transition:width 2s; /* Opera */
}
#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;}
/* Firefox 4: */
#div1 {-moz-transition-timing-function: linear;}
#div2 {-moz-transition-timing-function: ease;}
#div3 {-moz-transition-timing-function: ease-in;}
#div4 {-moz-transition-timing-function: ease-out;}
#div5 {-moz-transition-timing-function: ease-in-out;}
/* Safari and Chrome: */
#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;}
/* Opera: */
#div1 {-o-transition-timing-function: linear;}
#div2 {-o-transition-timing-function: ease;}
#div3 {-o-transition-timing-function: ease-in;}
#div4 {-o-transition-timing-function: ease-out;}
#div5 {-o-transition-timing-function: ease-in-out;}
.trans_box:hover div
{
width:500px;
}
</
style
>
</
head
>
<
body
>
<
div
id
=
"transBox"
class
=
"trans_box"
>
<
div
id
=
"div2"
style
=
"top:150px"
>ease<
br
>(default)</
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
>
<
div
id
=
"div1"
style
=
"top:100px"
>linear</
div
>
</
div
>
</
body
>
</
html
>
|
2,为过渡增加延时
过渡属性还可以添加一个可选的延时,用以将过渡的开始推迟一段时间。下面是一个等待1秒的例子。
延时1秒
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<!doctype html>
<
html
lang
=
"en"
>
<
head
>
<
title
>hangge.com</
title
>
<
style
>
.trans_box3 {
padding: 20px;
*zoom:1;
}
.trans_box3 div{
width:100px;
height:50px;
background:#2D9900;
color:white;
font-weight:bold;
-webkit-transition: all 2s ease-out 1s;
-moz-transition: all 2s ease-out 1s;
-o-transition: all 2s ease-out 1s;
transition: all 2s ease-out 1s;
}
.trans_box3:hover div
{
width:500px;
}
</
style
>
</
head
>
<
div
class
=
"trans_box3"
>
<
div
>延时1秒</
div
>
</
div
>
</
html
>
|
原文出自:www.hangge.com 转载请保留原文链接:https://www.hangge.com/blog/cache/detail_988.html