There are three animation functions of css3:
1. transition (transition attribute)
2. animation (animation attribute)
3. transform (2D/3D conversion attribute)
The following will introduce my understanding one by one:
1. transition:
For example, -webkit-transition:color 1s;
is equivalent to:
-webkit-transition-property:color;
-webkit-transition-duration:1s;
The transition effect of multiple attributes can be written like this:
Method 1:-webkit-transition:
Method 2:
-webkit-transition:
-webkit-transition:
transition-timing-function attribute values have 5 values:
ease: start slowly, end slowly
liner: uniform
ease- in: slow start
ease-out: slow end
ease-in-out: slow start, slow end (slightly different from ease)
Example:
transition transition effect
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>transition过渡效果</title>
<style>
*{
margin: 0px;
padding: 0px;
}
#box{
width: 200px;
height: 200px;
background-color: chocolate;
position: relative;
left: 0px;
top: 0px;
transition: top 5s ease,left 5s ease ;
-moz-transition: top 5s ease,left 5s ease ; /* Firefox 4 */
-webkit-transition: top 5s ease,left 5s ease ; /* Safari and Chrome */
-o-transition: top 5s ease,left 5s ease ; /* Opera */
}
.btn{
width: 512px;
margin: 0 auto;
border: 2px solid #e3e3e3;
border-radius: 5px;
padding: 10px;
}
.btn button{
width: 80px;
height: 40px;
text-align: center;
line-height: 40px;
margin-right: 20px;
}
button:last-child{
margin-right: 0px;
}
</style>
<script>
window.onload=function(){
var e1 = document.getElementById("e1");
var e2 = document.getElementById("e2");
var e3 = document.getElementById("e3");
var e4 = document.getElementById("e4");
var e5 = document.getElementById("e5");
var box = document.getElementById("box");
e1.onclick=function(){
box.style.left = 1000+"px";
box.style.top = 100+"px";
box.style.transitionTimingFunction="ease";
};
e2.onclick=function(){
box.style.right = 0+"px";
box.style.top = 0+"px";
box.style.transitionTimingFunction="liner";
};
e3.onclick=function(){
box.style.right = 1000+"px";
box.style.top = 100+"px";
box.style.transitionTimingFunction="ease-in";
};
e4.onclick=function(){
box.style.left = 0+"px";
box.style.top = 0+"px";
box.style.transitionTimingFunction="ease-out";
};
e5.onclick=function(){
box.style.left = 1000+"px";
box.style.top = 100+"px";
box.style.transitionTimingFunction="ease-in-out";
};
}
</script>
</head>
<body>
<p id="box"></p>
<br>
<br>
<br>
<br>
<br>
<br>
<hr>
<br>
<br>
<br>
<p class="btn">
<button id="e1">ease</button>
<button id="e2">liner</button>
<button id="e3">ease-in</button>
<button id="e4">ease-out</button>
<button id="e5">ease-in-out</button>
</p>
</body>
</html>2. Animation attribute animation
animation: name duration timing-function delay iteration-count direction;
Value |
Description |
| ##animation-name | #Specifies the keyframe name that needs to be bound to the selector. . |
| animation-duration | Specifies the time it takes to complete the animation, in seconds or milliseconds. |
| animation-timing-function | Specifies the speed curve of animation. |
| animation-delay | Specifies the delay before the animation starts. |
| animation-iteration-count | Specifies the number of times the animation should be played. |
| animation-direction | Specifies whether the animation should be played in reverse in turn. |
| ##value
|
Description
|
|
Required. Defines the name of the animation. |
|
|
Required. The percentage of animation duration. |
Legal values:
##0-100%
|
Required. One or more legal CSS style properties. |
以百分比来规定改变发生的时间，或者通过关键词 "from" 和 "to"，等价于 0% 和 100%。 0% 是动画的开始时间，100% 动画的结束时间。 例如： animation:mymove 5s infinite;
@keyframes mymove{
from{ top:0px; }
to{ top:200px; }
}还可以这么写： @keyframes mymove{
0%{ top:0px; }
25%{ top:200px; }
50%{ top:100px; }
75%{ top:200px; }
100%{ top:0px; }
} 案例： <!DOCTYPE html>
<html>
<head>
<style>
p
{
width:100px;
height:100px;
background:red;
position:relative;
animation:mymove 5s infinite;
-moz-animation:mymove 5s infinite; /* Firefox */
-webkit-animation:mymove 5s infinite; /* Safari and Chrome */
-o-animation:mymove 5s infinite; /* Opera */
}
@keyframes mymove
{
from {top:0px;}
to {top:200px;}
}
@-moz-keyframes mymove /* Firefox */
{
from {top:0px;}
to {top:200px;}
}
@-webkit-keyframes mymove /* Safari and Chrome */
{
from {top:0px;}
to {top:200px;}
}
@-o-keyframes mymove /* Opera */
{
from {top:0px;}
to {top:200px;}
}
</style>
</head>
<body>
<p><b>注释：</b>本例在 Internet Explorer 中无效。</p>
<p></p>
</body>
</html>3、设置3D场景（即transform） -webkit-perspective:800;(单位为像素)--即三维物体距离屏幕的距离。 -webkit-perspective-origin:50% 50%;(这个属性代表了人眼观察的视野。50% 50%为X轴、Y轴相应的位置，即屏幕的正中央。) 使用transform属性调整元素：-webkit-transform-style:-webkit-perserve-3d;(这个属性是告诉浏览器我们是在一个三维空间中对元素进行操作) (1)、translate(移动距离) translateX（x px） translateY（y px） translateZ（z px） (2)、rotate(旋转角度) rotateX(x deg) rotateY(y deg) rotateZ(z deg) transform：rotate（45deg） rotateX:向屏幕上边沿向内旋转为正方向。 rotateY:向屏幕竖直向下为正方向。 rotateZ:向屏幕外为正方向。 一个p块，右边沿向屏幕内旋转45deg,即应设置为：Transform：rotateY（45deg）。 实例： transform3D转换效果 <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>transform3D转换效果</title>
<style>
*{
margin: 0px;
padding: 0px;
}
#box{
width: 200px;
height: 200px;
background-color: chocolate;
position: relative;
left: 0px;
top: 0px;
perspective:800px;
perspective-origin:50% 50%;
transform-style: preserve-3d;
transform-origin:0% 100%;//以Y轴为旋转中心
}
p{
margin:20px 520px;
}
.btn{
width: 300px;
margin: 0 auto;
border: 2px solid #e3e3e3;
border-radius: 5px;
padding: 10px;
}
.btn button{
width: 80px;
height: 40px;
text-align: center;
line-height: 40px;
margin-right: 20px;
}
button:last-child{
margin-right: 0px;
}
</style>
<script>
window.onload=function(){
var tx = document.getElementById("tx");
var ty = document.getElementById("ty");
var tz = document.getElementById("tz");
var rx = document.getElementById("rx");
var ry = document.getElementById("ry");
var rz = document.getElementById("rz");
var box = document.getElementById("box");
tx.onclick=function(){
box.style.transform = "translateX(500px)";
};
ty.onclick=function(){
box.style.transform = "translateY(400px)"
};
rx.onclick=function(){
box.style.transform = "rotateX(30deg)"
};
ry.onclick=function(){
box.style.transform = "rotateY(30deg)"
};
rz.onclick=function(){
box.style.transform = "rotateZ(30deg)"
};
}
</script>
</head>
<body>
<p id="box"></p>
<br>
<br>
<br>
<br>
<br>
<br>
<hr>
<br>
<br>
<br>
<p>translate(移动距离)</p>
<p class="btn">
<button id="tx">translateX</button>
<button id="ty">translateY</button>
</p>
<p>rotate(旋转角度)</p>
<p class="btn">
<button id="rx">rotateX</button>
<button id="ry">rotateY</button>
<button id="rz">rotateZ</button>
</p>
</body>
</html>使用transform-origin属性调整旋转中心。默认旋转中心点为p盒子的正中心。 这个旋转中心是可以改变的： X轴：left、center、right. Y轴：top、center、bottom. Z轴：length px(一个长度值)。 以上这篇css3动画效果小结(推荐)就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持PHP中文网。 更多Summary analysis of css3 animation effects相关文章请关注PHP中文网！ 相关文章： |
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