javascript - 在 Designer 上的 Polymer 中使用核心动画页面

Question

我正在尝试使用 Designer 来搞乱。我正在尝试在两个核心动画页面部分之间创建一个简单的面部过渡，但我不确定哪里出错了。我正在使用的代码如下。您只需将整个代码粘贴到设计器 ( http://www.polymer-project.org/tools/designer/ ) 的代码 View 中即可。我只想让小白色方 block 褪色并出现更大的白色方 block 。

你能帮忙吗？

<link rel="import" href="../core-animated-pages/core-animated-pages.html">
<link rel="import" href="../core-animated-pages/transitions/hero-transition.html">
<link rel="import" href="../core-animated-pages/transitions/cross-fade.html">
<link rel="import" href="../core-animated-pages/transitions/slide-down.html">
<link rel="import" href="../core-animated-pages/transitions/slide-up.html">
<link rel="import" href="../core-animated-pages/transitions/tile-cascade.html">

<polymer-element name="my-element">

  <template>
    <style>    
      :host {
        position: absolute;
        width: 100%;
        height: 100%;
        box-sizing: border-box;
      }
      #core_animated_pages {
        width: 420px;
        height: 582px;
        overflow: hidden;
        left: 270px;
        top: 50px;
        position: absolute;
        background-color: rgb(238, 238, 238);
      }
      #core_card {
        width: 300px;
        height: 300px;
        border-top-left-radius: 2px;
        border-top-right-radius: 2px;
        border-bottom-right-radius: 2px;
        border-bottom-left-radius: 2px;
        box-shadow: rgba(0, 0, 0, 0.0980392) 0px 2px 4px, rgba(0, 0, 0, 0.0980392) 0px 0px 3px;
        background-color: rgb(255, 255, 255);
      }
      #core_card1 {
        width: 100%;
        height: 100%;
        border-top-left-radius: 2px;
        border-top-right-radius: 2px;
        border-bottom-right-radius: 2px;
        border-bottom-left-radius: 2px;
        box-shadow: rgba(0, 0, 0, 0.0980392) 0px 2px 4px, rgba(0, 0, 0, 0.0980392) 0px 0px 3px;
        background-color: rgb(255, 142, 129);
      }
    </style>
    <core-animated-pages transitions="fade" selectedindex="{{ mySelected }}" notap id="core_animated_pages">
      <section id="section" layout horizontal center center-justified activ1e active>
        <core-card id="core_card" layout vertical on-tap="{{ change }}" fade></core-card>
      </section>
      <section id="section1">
        <core-card id="core_card1" layout vertical fade></core-card>
      </section>
      <section id="section2">
      </section>
    </core-animated-pages>
  </template>

  <script>

    Polymer('my-element', {
      change: function () {
       mySelected = 1;
      },
      mySelected: 1
    });

  </script>

</polymer-element>

Answer 1

过渡和属性都称为交叉淡入淡出。

尝试这样的事情:https://gist.github.com/sorvell/9a2e155ca0774c2611dd