在APP应用上，常见的一种导航方式是侧滑导航，效果类似于这样：
用CSS3可以对其进行模拟，代码如下：
HTML：
<nav> <div id="toggleMenu"> <span id="hide"></span> <span id="show"></span> </div> <ul id="list"> <li> <a href="#">首页</a> </li> <li> <a href="#">问题</a> </li> <li> <a href="#">文章</a> </li> <li> <a href="#">关注</a> </li> <li> <a href="#">发现</a> </li> </ul> </nav>
CSS:
nav{ width: 100%; height: 50px; background-color: rgba(26,188, 156, 0.75); position: relative; } div{ position: absolute; height: 100%; width: 50px; left: 20px; cursor: pointer; -webkit-transition: transform 1s; -moz-transition: transform 1s; -ms-transition: transform 1s; -o-transition: transform 1s; transition: transform 1s; } #hide,#show{ display: block; height: 3px; background-color: #FFF; position: absolute; top: 50%; -webkit-transition: opacity .5s; -moz-transition: opacity .5s; -ms-transition: opacity .5s; -o-transition: opacity .5s; transition: opacity .5s; } #show{ width: 20px; left: 15px; opacity: 0; } #hide{ width: 30px; left: 10px; margin-top: -1.5px; } #hide::before,#hide::after,#show::before,#show::after{ content: ""; display: block; height: 3px; background-color: #FFF; position: absolute; } #hide::before,#hide::after{ width: 30px; } #show::before,#show::after{ width: 25px; } #hide::before,#show::before{ top: -10px; } #hide::after,#show::after{ top: 10px; } #show::before{ -webkit-transform: rotate(35deg) translateX(5px); -moz-transform: rotate(35deg) translateX(5px); -ms-transform: rotate(35deg) translateX(5px); -o-transform: rotate(35deg) translateX(5px); transform: rotate(35deg) translateX(5px); } #show::after{ -webkit-transform: rotate(-35deg) translateX(5px); -moz-transform: rotate(-35deg) translateX(5px); -ms-transform: rotate(-35deg) translateX(5px); -o-transform: rotate(-35deg) translateX(5px); transform: rotate(-35deg) translateX(5px); } ul{ list-style: none; background-color: #455552; position: absolute; top: 34px; left: -200px; width: 74px; -webkit-transition: all .5s ease-in-out; -moz-transition: all .5s ease-in-out; -ms-transition: all .5s ease-in-out; -o-transition: all .5s ease-in-out; transition: all .5s ease-in-out; } li{ margin: 0; padding: 0; position: relative; left: -40px; text-align: center; width: 112px; } a{ text-decoration: none; color:#FFF; display: inline-block; height: 40px; line-height: 40px; } li:hover{ background-color: rgba(26,188, 156, 0.75); }JavaScript控制一下事件：
var toggle = document.getElementById("toggleMenu"); var list = document.getElementById("list"); var hide = document.getElementById("hide"); var show = document.getElementById("show"); var isHidden = true; window.onload = function() { toggle.onclick=function(){ if(isHidden){ list.style.left="0px"; isHidden = false; hide.style.opacity=0; this.style.mozTransform = "rotate(180deg)"; this.style.msTransform = "rotate(180deg)"; this.style.oTransform = "rotate(180deg)"; this.style.webkitTransform = "rotate(180deg)"; this.style.transform = "rotate(180deg)"; show.style.opacity=1; }else{ list.style.left="-200px"; isHidden = true; hide.style.opacity=1; this.style.mozTransform = "rotate(0deg)"; this.style.msTransform = "rotate(0deg)"; this.style.oTransform = "rotate(0deg)"; this.style.webkitTransform = "rotate(0deg)"; this.style.transform = "rotate(0deg)"; show.style.opacity=0; } } }效果：demo
原文出处：http://www.ido321.com/1551.html
