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html5菜单折纸效果
简介类似猎豹浏览器安装时的用户须知效果。点击后效果复制代码代码如下: fold paper</div>
<div class="news_infos"><div id="MyContent"><p>类似猎豹浏览器安装时的用户须知效果。<br><br><a href="javascript:;" onclick="showimg('/UploadFiles/2021-03-30/20140422164631.jpg?2014322164842');"><img src="/UploadFiles/2021-03-30/20140422164631.jpg?2014322164842" alt="html5菜单折纸效果" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a></p>
点击后效果
<p><a href="javascript:;" onclick="showimg('/UploadFiles/2021-03-30/20140422164644.jpg?201432216493');"><img src="/UploadFiles/2021-03-30/20140422164644.jpg?201432216493" alt="html5菜单折纸效果" onmousewheel="return bbimg(this)" onload="javascript:resizepic(this)" border="0"/></a><br><br><u>复制代码</u>代码如下:<br><!DOCTYPE html><br><html><br> <head><br> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><br> <title>fold paper effect by gt-柯乐义</title><br> <style><br>#wrapper {<br> -webkit-perspective: 55cm;<br> -webkit-perspective-origin: 50% 50%;<br> text-align: center;<br>}<br>.paper {<br> position: relative;<br> height: 40px;<br> width: 5em;<br> margin: 0;<br> background-color: aqua;<br> -webkit-transition: -webkit-transform 1s linear;<br>}<br></style><br> <script type="text/javascript"><br> window.angel = 0;<br> window.timer;<br> function fold() {<br> var foldUp = document.getElementById("foldUp");<br> var foldDown = document.getElementById("foldDown");<br> var down = document.getElementById("down");<br> if (window.angel == 0) {<br> window.timer = setInterval(function() {<br> var diff = different(-1, 20);<br> console.log(foldUp.offsetTop)<br> move(foldUp, diff, 1);<br> move(foldDown, diff, 3);<br> move(down, diff, 4);<br> }, 40);<br> setTimeout(function() {<br> clearInterval(window.timer);<br> foldUp.style.top = "-20px";<br> foldDown.style.top = "-60px";<br> down.style.top = "-80px";<br> window.angel = -90;<br> }, 1030);<br> foldUp.style.webkitTransform = "rotateX(-90deg)";<br> foldDown.style.webkitTransform = "rotateX(90deg)";<br> } else if (angel == -90) {<br> window.timer = setInterval(function() {<br> var diff = different(1, 20);<br> console.log(foldUp.offsetTop)<br> move(foldUp, diff, 1);<br> move(foldDown, diff, 3);<br> move(down, diff, 4);<br> }, 40);<br> setTimeout(function() {<br> clearInterval(window.timer);<br> foldUp.style.top = "0";<br> foldDown.style.top = "0";<br> down.style.top = "0";<br> window.angel = 0;<br> }, 1030);<br> foldUp.style.webkitTransform = "rotateX(0deg)";<br> foldDown.style.webkitTransform = "rotateX(0deg)";<br> } else {<br> console.log(window.angel)<br> }<br> }<br> function positionValue(div, type) {// 得到css带单位的值<br> var str = div.style[type];<br> str = str.substring(0, str.length - 2);<br> var value = parseInt(str);<br> if (isNaN(value)) {<br> value = 0;<br> }<br> return value;<br> }<br> function move(div, different, time) {<br> var top = positionValue(div, "top");<br> div.style.top = top + different * time + "px";<br> }<br> function different(direction, height) {<br> var lastAngel = window.angel;<br> window.angel += 3.6 * direction;<br> var different = Math<br> .ceil((Math.cos(window.angel / 180 * Math.PI) - Math<br> .cos(lastAngel / 180 * Math.PI))<br> * height * 100) / 100;<br> return different;<br> }<br></script><br> </head><br> <body><br> <div id="wrapper"><br> <div id="up" class="paper"><br> g<br> </div><br> <div id="foldUp" class="paper"><br> n<br> </div><br> <div id="foldDown" class="paper"><br> b<br> </div><br> <div id="down" class="paper"><br> t<br> </div><br> </div><br> <button onclick=fold();><br> fold<br> </button><br> </body><br></html><br></p></div>
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