动画效果预览
网址：http://www.iuvo.si/
1.首先分析幽灵按钮动画用到的动画效果有旋转，放大，淡入淡出
1> 涉及 css3的 transform
rotate() 元素顺时针旋转
scale() 元素尺寸的放大或缩小
2> css3 过渡效果 transition
3> css 定位 position
left：距离左边多少，正值向右，负值向左
right：距离右边多少，正值向左，负值向右
top：距离顶部多少，正值向下，负值向上
bottom：距离底部多少，正值向上，负值向下
2.实现幽灵按钮的步骤
1> 页面元素布局
2> 添加图片并加入过渡效果
3> 设置按钮过渡效果
4> 设置顶部、底部线条效果
5> 设置左右线条动画效果
6> 优化效果，响应式
代码如下
html代码
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <link rel="stylesheet" href="css/style.css"> <script src="js/jquery-1.8.3.min.js"></script> <script src="js/script.js"></script> </head> <body> <div class="box"> <div class="link mission-link"> <span class="icon animated"></span> <a class="button" data-title="My mission is clear"> <span class="line line-top"></span> <span class="line line-right"></span> <span class="line line-bottom"></span> <span class="line line-left"></span> Mission </a> </div> <div class="link play-link"> <span class="icon animated"></span> <a class="button" data-title="This is my playground"> <span class="line line-top"></span> <span class="line line-right"></span> <span class="line line-bottom"></span> <span class="line line-left"></span> Play </a> </div> <div class="link touch-link"> <span class="icon animated"></span> <a class="button" data-title="This is my playground demos"> <span class="line line-top"></span> <span class="line line-right"></span> <span class="line line-bottom"></span> <span class="line line-left"></span> Touch </a> </div> <p class="tip"><em></em><span></span></p> </div> </body> </html>
css代码
*{margin:0;
padding:0;}
body{background:#333;}
.box{800px;
height:280px;
margin:50px auto;
overflow:hidden;}
.box .link{display:inline-block;
205px;
height:220px;
margin:0 20px;
position:relative;}
.link .icon{display:block;
100%;
height:180px;
-moz-transition:ease-out 0.2s;
-o-transition:ease-out 0.2s;
-webkit-transition:ease-out 0.2s;
transition:ease-out 0.2s;}
.link .icon:hover{transform:rotate(360deg) scale(1.2);
-moz-transform:rotate(360deg) scale(1.2);
-o-transform:rotate(360deg) scale(1.2);
-webkit-transform:rotate(360deg) scale(1.2);}
.mission-link .icon{background:url(../images/mission.png) no-repeat center 0;}
.play-link .icon{background:url(../images/play.png) no-repeat center 0;}
.touch-link .icon{background:url(../images/touch.png) no-repeat center 0;}
.button{display:block;
180px;
height:50px;
border:2px solid rgba(255,255,255,0.8);
line-height:50px;
padding-left:20px;
box-sizing:border-box;
-webkit-box-sizing:border-box;
-o-box-sizing:border-box;
-moz-box-sizing:border-box;
margin:0 auto;
font-weight:bold;
font-size:18px;
text-decoration:none;
text-transform:uppercase;
font-family:Arial;
color:#2DCB70;
background:url(../images/allow.png) no-repeat 130px center;
-moz-transition:ease 0.4s;
-o-transition:ease 0.4s;
-webkit-transition:ease 0.4s;
transition:ease 0.4s;
position:relative;}
.button:hover{border:2px solid #fff;
background-position:140px center;}
.button .line{position:absolute;
background:none;
-moz-transition:ease 0.4s;
-o-transition:ease 0.4s;
-webkit-transition:ease 0.4s;
transition:ease 0.4s;}
.button:hover .line{background:#fff;}
.button .line-top{0px;
height:2px;
left:-110%;
top:-2px;}
.button:hover .line-top{100%;
left:-2px;}
.button .line-right{2px;
height:0px;
right:-2px;
top:-110%;}
.button:hover .line-right{height:100%;
top:-2px;}
.button .line-bottom{2px;
height:0px;
left:-2px;
bottom:-110%;}
.button:hover .line-bottom{height:100%;
bottom:-2px;}
.button .line-left{0px;
height:2px;
right:-110%;
bottom:-2px;}
.button:hover .line-left{100%;
right:-2px;}
.box .tip{position:absolute;
padding:0px 14px;
height:35px;
line-height:35px;
background:#2DCB70;
color:#fff;
top:160px;
font-size:16px;
font-weight:normal;
text-transform:none;
margin:0 auto;
opacity:0;
border-radius:3px}
.tip em{font-style:normal;}
.tip span{position:absolute;
0;
height:0;
overflow:hidden;
border:7px solid transparent;
border-top-color:#2DCB70;
left:50%;
margin-left:-3px;
bottom:-14px;}
js代码
$(function(){ $('.link .button').hover(function(){ var title=$(this).attr('data-title'); $('.tip em').text(title); var pos=$(this).offset().left; var dis=($('.tip').outerWidth()-$(this).outerWidth())/2; var l=pos-dis; $('.tip').css({'left':l+'px'}).animate({'top':180,'opacity':1},300); },function(){ $('.tip').animate({'top':160,'opacity':0},300); }) })
以上