尝试在markdown中运行代码

markdown

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<p data-height="268" data-theme-id="0" data-slug-hash="YXQoQE" data-default-tab="result" data-user="nikrowell" class='codepen'>See the Pen <a href='http://codepen.io/nikrowell/pen/YXQoQE/'>Scripted Heart</a> by Nik (<a href='http://codepen.io/nikrowell'>@nikrowell</a>) on <a href='http://codepen.io'>CodePen</a>.</p>
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使用codepen分享前端代码
见多识广,CodePen项目网站简介

<p data-height="268" data-theme-id="0" data-slug-hash="YXQoQE" data-default-tab="result" data-user="nikrowell" class='codepen'>See the Pen <a href='http://codepen.io/nikrowell/pen/YXQoQE/'>Scripted Heart</a> by Nik (<a href='http://codepen.io/nikrowell'>@nikrowell</a>) on <a href='http://codepen.io'>CodePen</a>.</p>
<p><script async src="http://codepen.io/assets/embed/ei.js"></script><span id="more-2017"></span></p>