他的官网：http://docs.emmet.io/

给广大程序员节省时间

#page>div.logo+ul#navigation>li*5>a{Item $}
生产

<div id="page">

    <div class="logo"></div>

    <ul id="navigation">

        <li><a href="">Item 1</a></li>

        <li><a href="">Item 2</a></li>

        <li><a href="">Item 3</a></li>

        <li><a href="">Item 4</a></li>

        <li><a href="">Item 5</a></li>

    </ul>

</div>
样式也牛逼：
margin: 10ex 20em;, m10ex-5 → margin: 10ex -5px;.

Value aliases

Emmet has a few aliases for commonly used values:

• p → %
• e → em
• x → ex

You can use aliases instead of full units:

• w100p → width: 100%
• m10p30e5x → margin: 10% 30em 5ex

Color values

Emmet supports hex color values, like this: c#3 → color: #333;. The # sign is a value separator so you don’t need to use hyphen to separate it. For example, bd5#0s expands to border: 5px #000 solid: the #sign separates color from 5 and since s (alias to solid) is not a hexadecimal character, it can be used without- value separator.

You can write one, two, three or six characters as color value:

• #1 → #111111
• #e0 → #e0e0e0
• #fc0 → #ffcc00