案例：ionic案例     状态：可编辑再运行    进入竖版
 运行结果　
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<html ng-app="ionicApp">
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    <head>
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        <meta charset="utf-8">
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        <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
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        <title>W3xue教程(w3xue.com)</title>
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        <link href="https://cdn.bootcss.com/ionic/1.3.2/css/ionic.css" rel="stylesheet">
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        <script src="https://cdn.bootcss.com/ionic/1.3.2/js/ionic.bundle.min.js"></script>
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    </head>
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    <body>
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    <button class="button button-clear button-positive">
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      Clear Button
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    </button>
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​
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    <div class="content padding has-header">
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        <p>
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        <button class="button button-clear button-light">button-light</button>
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        </p>
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        <p>
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        <button class="button button-clear button-stable">button-stable</button>
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        </p>
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        <p>
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        <button class="button button-clear button-positive">button-positive</button>
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        </p>
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        <p>
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        <button class="button button-clear button-calm">button-calm</button>
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        </p>
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        <p>
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        <button class="button button-clear button-balanced">button-balanced</button>
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        </p>
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        <p>
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        <button class="button button-clear button-energized">button-energized</button>
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        </p>
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        <p>
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        <button class="button button-clear button-assertive">button-assertive</button>
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        </p>
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        <p>
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        <button class="button button-clear button-royal">button-royal</button>
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        </p>
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        <p>
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        <button class="button button-clear button-dark">button-dark</button>
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        </p>
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    </div>
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​
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  </body>
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</html>
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​