Heim  >  Artikel  >  Web-Frontend  >  HTML5-Menü Origami-Effekt_HTML5-Tutorial-Fähigkeiten

HTML5-Menü Origami-Effekt_HTML5-Tutorial-Fähigkeiten

PHP中文网
PHP中文网Original
2016-05-16 15:47:581657Durchsuche

Ähnlich den Benutzeranweisungen bei der Installation von Cheetah Browser.

Der Effekt nach dem Klicken

Der Code lautet wie folgt:

<!DOCTYPE html>
<html>
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  <title>fold paper effect by gt-柯乐义</title>
  <style>
#wrapper {
 -webkit-perspective: 55cm;
 -webkit-perspective-origin: 50% 50%;
 text-align: center;
}
.paper {
 position: relative;
 height: 40px;
 width: 5em;
 margin: 0;
 background-color: aqua;
 -webkit-transition: -webkit-transform 1s linear;
}
</style>
  <script type="text/javascript">
 window.angel = 0;
 window.timer;
 function fold() {
  var foldUp = document.getElementById("foldUp");
  var foldDown = document.getElementById("foldDown");
  var down = document.getElementById("down");
  if (window.angel == 0) {
   window.timer = setInterval(function() {
    var diff = different(-1, 20);
    console.log(foldUp.offsetTop)
    move(foldUp, diff, 1);
    move(foldDown, diff, 3);
    move(down, diff, 4);
   }, 40);
   setTimeout(function() {
    clearInterval(window.timer);
    foldUp.style.top = "-20px";
    foldDown.style.top = "-60px";
    down.style.top = "-80px";
    window.angel = -90;
   }, 1030);
   foldUp.style.webkitTransform = "rotateX(-90deg)";
   foldDown.style.webkitTransform = "rotateX(90deg)";
  } else if (angel == -90) {
   window.timer = setInterval(function() {
    var diff = different(1, 20);
    console.log(foldUp.offsetTop)
    move(foldUp, diff, 1);
    move(foldDown, diff, 3);
    move(down, diff, 4);
   }, 40);
   setTimeout(function() {
    clearInterval(window.timer);
    foldUp.style.top = "0";
    foldDown.style.top = "0";
    down.style.top = "0";
    window.angel = 0;
   }, 1030);
   foldUp.style.webkitTransform = "rotateX(0deg)";
   foldDown.style.webkitTransform = "rotateX(0deg)";
  } else {
   console.log(window.angel)
  }
 }
 function positionValue(p, type) {// 得到css带单位的值
  var str = p.style[type];
  str = str.substring(0, str.length - 2);
  var value = parseInt(str);
  if (isNaN(value)) {
   value = 0;
  }
  return value;
 }
 function move(p, different, time) {
  var top = positionValue(p, "top");
  p.style.top = top + different * time + "px";
 }
 function different(direction, height) {
  var lastAngel = window.angel;
  window.angel += 3.6 * direction;
  var different = Math
    .ceil((Math.cos(window.angel / 180 * Math.PI) - Math
      .cos(lastAngel / 180 * Math.PI))
      * height * 100) / 100;
  return different;
 }
</script>
 </head>
 <body>
  <p id="wrapper">
   <p id="up" class="paper">
    g
   </p>
   <p id="foldUp" class="paper">
    n
   </p>
   <p id="foldDown" class="paper">
    b
   </p>
   <p id="down" class="paper">
    t
   </p>
  </p>
  <button onclick=fold();>
   fold
  </button>
 </body>
</html>


Stellungnahme:
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn