如何使用CSS翻转多个div？ [英] How to flip multiple divs using CSS?

问题描述

当我使用CSS3点击菜单时，如何翻转多个 div ？

How can I flip multiple div's when I clicked on menus using CSS3?

此代码仅适用于最后两个 div s：

This code is working for only the last two divs :

HTML代码

<ul class="nav">
   <li><a href="#home">home</a></li>
   <li><a href="#about">about</a></li>
   <li><a href="#work">work</a></li>
   <li><a href="#contact">contact</a></li>
</ul>
<section class="container">
   <div id="card">
      <div class="front flipper" id="home">home</div>
      <div class="back flipper" id="about">about</div>
      <div class="front flipper" id="work">work</div>
      <div class="back flipper" id="contact">contact</div>
   </div>
</section>

CSS代码

    .container {
    width: 500px;
    height: 360px;
    position: relative;
    margin: 0 auto 40px;
    border: 1px solid #CCC;
    -webkit-perspective: 800px;
    -moz-perspective: 800px;
    -o-perspective: 800px;
    perspective: 800px;
}
#card {
    width: 100%;
    height: 100%;
    position: absolute;
    -webkit-transition: -webkit-transform 1s;
    -moz-transition: -moz-transform 1s;
    -o-transition: -o-transform 1s;
    transition: transform 1s;
    -webkit-transform-style: preserve-3d;
    -moz-transform-style: preserve-3d;
    -o-transform-style: preserve-3d;
    transform-style: preserve-3d;
}
#card.flipped {
    -webkit-transform: rotateX( 180deg);
    -moz-transform: rotateX( 180deg);
    -o-transform: rotateX( 180deg);
    transform: rotateX( 180deg);
}
#card .flipper {
    display: block;
    height: 100%;
    width: 100%;
    line-height: 260px;
    color: white;
    text-align: center;
    font-weight: bold;
    font-size: 140px;
    position: absolute;
    -webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
    -o-backface-visibility: hidden;
    backface-visibility: hidden;
}
.flipper {
    background: #963
}
#card .front {
    background: red;
}
#card .back {
    background: blue;
    -webkit-transform: rotateX( 180deg);
    -moz-transform: rotateX( 180deg);
    -o-transform: rotateX( 180deg);
    transform: rotateX( 180deg);
}

JavaScript代码

   $(".nav li").on("click", function() {

    var activeTab = $(this).find("a").attr("href");

    //  alert(activeTab);

    if ($("#card").hasClass("flipped")) {
        $("#card").removeClass("flipped");
    } else {
        $("#card").addClass("flipped");
    }

    return false;
});

有什么建议吗？

推荐答案

与两个元素一起使用时的翻转动画非常简单，因为有一个背面和一个正面。但是当需要使用许多元素实现相同时，它会变得格外复杂，因为您需要维护3个状态，如下所示：

The flip animation when used with two elements is a very simple one because there is one back side and one front side. But when the same needs to be implemented with many elements then it becomes extra complex because you need to maintain 3 states which are as follows:

• 翻转 - 这是一个块进入视图并且旋转为0度（基本上没有旋转）。


• 之前 - 这是在翻转元素之前的元素的状态。在这种状态下，块在一个方向上旋转180度。


• After - 这是在翻转元素之后的元素状态。在这种状态下，块以相反的方向旋转180度。

所以基本上当点击一个链接时，它前面的块是从0度旋转到180度，目标块本身从-180度旋转到0度（下一个元素保持在-180度）。做这些事情可以让它具有链旋转的外观和感觉。

So basically when a link is clicked, the block before it is rotated from 0 to 180 degree, the target block itself is rotated from -180 degree to 0 degree (and next element remains at -180 degree). Doing these things provide it the look and feel of having a chain rotation.

$(".nav li a").on("click", function() {
  var activeTab = $(this).attr("href");
  $('#card > div').removeClass('flipped after before');
  $(activeTab).addClass('flipped');
  $(activeTab).prevAll('.flipper').addClass('before');
  $(activeTab).nextAll('.flipper').addClass('after');
  return false;
});

.container {
   width: 500px;
   height: 360px;
   position: relative;
   margin: 0 auto 40px;
   border: 1px solid #CCC;
   -webkit-perspective: 800px;
   -moz-perspective: 800px;
   -o-perspective: 800px;
   perspective: 800px;
 }
 #card {
   width: 100%;
   height: 100%;
   position: absolute;
   -webkit-transform-style: preserve-3d;
   -moz-transform-style: preserve-3d;
   -o-transform-style: preserve-3d;
   transform-style: preserve-3d;
 }
 #card .flipper {
   display: block;
   height: 100%;
   width: 100%;
   line-height: 260px;
   color: white;
   text-align: center;
   font-weight: bold;
   font-size: 140px;
   position: absolute;
   -webkit-transition: -webkit-transform 1s, opacity 1s;
   -moz-transition: -moz-transform 1s, opacity 1s;
   -o-transition: -o-transform 1s, opacity 1s;
   transition: transform 1s, opacity 1s;
   -webkit-backface-visibility: hidden;
   -moz-backface-visibility: hidden;
   -o-backface-visibility: hidden;
   backface-visibility: hidden;
   background: blue;
   opacity: 0;
 }
 #card .flipper:nth-child(2n) {
   background: red;
 }
 #card .flipper.flipped {
   -webkit-transform: rotateX(0deg);
   -moz-transform: rotateX(0deg);
   -o-transform: rotateX(0deg);
   transform: rotateX(0deg);
   z-index: 1;
   opacity:1;
 }
 #card .flipper.before {
   -webkit-transform: rotateX(180deg);
   -moz-transform: rotateX(180deg);
   -o-transform: rotateX(180deg);
   transform: rotateX(180deg);
 }
 #card .flipper.after {
   -webkit-transform: rotateX(-180deg);
   -moz-transform: rotateX(-180deg);
   -o-transform: rotateX(-180deg);
   transform: rotateX(-180deg);
 }

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.0/jquery.min.js"></script>
<ul class="nav">
  <li><a href="#home">home</a>
  </li>
  <li><a href="#about">about</a>
  </li>
  <li><a href="#work">work</a>
  </li>
  <li><a href="#contact">contact</a>
  </li>
</ul>
<section class="container">
  <div id="card">
    <div class="flipper flipped" id="home">home</div>
    <div class="flipper after" id="about">about</div>
    <div class="flipper after" id="work">work</div>
    <div class="flipper after" id="contact">contact</div>
  </div>
</section>

注意： jQuery代码可以进一步优化，但我会将微调部分留给你。

Note: The jQuery code can be optimized further but I will leave the fine tuning part to you.

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