CSS3写折纸 

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>折纸选项卡</title>
<style>
@-webkit-keyframes open
{
    0%
    {
        -webkit-transform:rotateX(-120deg);
    }
    25%
    {
        -webkit-transform:rotateX(30deg);
    }
    50%
    {
        -webkit-transform:rotateX(-15deg);
    }
    75%
    {
        -webkit-transform:rotateX(8deg);
    }
    100%
    {
        -webkit-transform:rotateX(0deg);
    }
}
@-webkit-keyframes clos
{
    0%
    {
        -webkit-transform:rotateX(0deg);
    }
    100%
    {
        -webkit-transform:rotateX(-120deg);
    }
}
body{margin:0;}
#wrap{ width:160px;margin:30px auto; position:relative; -webkit-perspective:800px;}
#wrap h2{ height:40px;background:#F60; color:#fff; font: bold 16px/40px "微软雅黑"; text-align:center;margin:0; position:relative;z-index:10;}
#wrap div{ position:absolute;top:32px; width:100%;left:0; -webkit-transform-style:preserve-3d; -webkit-transform-origin:top;-webkit-transform:rotateX(-120deg);}
#wrap span{ display:block;height:30px;background:#9F0; font:12px/30px "宋体"; color:#fff; text-indent:20px; box-shadow:inset 0 0 0 20px rgba(0,0,0,1); transition:1s;}
#wrap>div{top:40px;}
#wrap .show{-webkit-animation:2s open;-webkit-transform:rotateX(0deg);}
#wrap .hide{-webkit-animation:0.8s clos;-webkit-transform:rotateX(-120deg);}
#wrap .show>span{ box-shadow:inset 0 0 0 20px rgba(0,0,0,0);}
#btn{ position:absolute;}
</style>
</head>
<body>
<!-- 布局时注意层层嵌套 -->
<input type="button" value="按钮" id="btn" />
<div id="wrap">
    <h2>我是标题奥</h2>
    <div>
        <span>选项1</span>
        <div>
            <span>选项2</span>
            <div>
                <span>选项3</span>
                <div>
                    <span>选项4</span>
                    <div>
                        <span>选项5</span>
                        <div>
                            <span>选项6</span>
                            <div style="">
                                <span>选项7</span>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>
<script>
var oBtn=document.getElementById("btn");
var oWrap=document.getElementById("wrap");
var aDiv=oWrap.getElementsByTagName("div");
var iDelay=200;
var oTimer=null;
var i=0;
var bOff=true;
oBtn.onclick=function()
{
    if(oTimer)
    {
        return;
    }
    if(bOff)
    {
        i=0;
        oTimer=setInterval(function(){
            aDiv[i].className="show";
            i++;
            if(i==aDiv.length)
            {
                clearInterval(oTimer);
                oTimer=null;
                bOff=false;
            }    
        },iDelay);
    }
    else
    {
        i=aDiv.length-1;
        oTimer=setInterval(function(){
            aDiv[i].className="hide";
            i--;
            if(i<0)
            {
                clearInterval(oTimer);
                bOff=true;
                oTimer=null;
            }    
        },iDelay);
    }
};
</script>
</body>
</html>

 

posted @ 2016-12-28 19:13  TheWinds  阅读(314)  评论(0)  编辑  收藏  举报