包含内容的Polymer 2.0菜单选项卡

Question

我是Google Polymer Project的新手。我只是初始化一个项目，使用Polymer进行自定义网站设计。但是，我想知道如何使用特定页面构建导航栏菜单。当我们点击每个标签时，我需要在主体上显示单独的内容。任何帮助将不胜感激!!

这是我的代码：

iron-image {
  width: 400px;
  height: 400px;
  background-color: black;
}

<base href="https://cdn.rawgit.com/download/polymer-cdn/1.5.0/lib/">
<script src="webcomponentsjs/webcomponents-lite.min.js"></script>

<link rel="import" href="paper-styles/classes/global.html">
<link rel="import" href="paper-tabs/paper-tabs.html">

<style is="custom-style">
  :root {
    --paper-tabs-selection-bar-color: var(--paper-light-blue-900);
    --paper-tab-ink: var(--paper-light-blue-100);
  
    --paper-tabs: {
      color: white;
      background-color: var(--paper-light-blue-500);
    };
  }
</style>

<paper-tabs selected="0">
  <paper-tab>TAB 1</paper-tab>
  <paper-tab>TAB 2</paper-tab>
  <paper-tab>TAB 3</paper-tab>
</paper-tabs>

JSFiddle：https://jsfiddle.net/8boLeohf/

Answer 1

要使其正常运行，您需要将iron-pages与paper-tabs一起使用。检查更新的小提琴。

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 var pages = document.querySelector('iron-pages');
     var tabs = document.querySelector('paper-tabs');

    tabs.addEventListener('iron-select', function() { 
        pages.selected = tabs.selected;
    });

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:root {
  --paper-tabs-selection-bar-color: var(--paper-light-blue-900);
  --paper-tab-ink: var(--paper-light-blue-100);
  --paper-tabs: {
    color: white;
    background-color: var(--paper-light-blue-500);
  }
  ;
}
iron-image {
  width: 400px;
  height: 400px;
  background-color: black;
}

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<base href="https://cdn.rawgit.com/download/polymer-cdn/1.5.0/lib/">
<script src="webcomponentsjs/webcomponents-lite.min.js"></script>

<link rel="import" href="paper-styles/classes/global.html">
<link rel="import" href="paper-tabs/paper-tabs.html">
<link rel="import" href="iron-pages/iron-pages.html">

<style is="custom-style">
  :root {
    --paper-tabs-selection-bar-color: var(--paper-light-blue-900);
    --paper-tab-ink: var(--paper-light-blue-100);
  
    --paper-tabs: {
      color: white;
      background-color: var(--paper-light-blue-500);
    };
  }
</style>

<div unresolved vertical layout>
  <paper-tabs selected="0">
    <paper-tab>TAB 1</paper-tab>
    <paper-tab>TAB 2</paper-tab>
    <paper-tab>TAB 3</paper-tab>
  </paper-tabs>
  <iron-pages selected="0">
    <div>Page 1</div>
    <div>Page 2</div>
    <div>Page 3</div>
  </iron-pages>
</div>

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