ConstraintJS 介绍
ConstraintJS 是一个用来开发动态 Web 应用的 JavaScript 框架。
示例代码：
<label>Title:</label>
<input class='form-control' type='text' cjs-out='demonym'
placeholder='Demonym' value='Commander' />
<label>Members (comma-separated):</label>
<input class='form-control' type='text' cjs-out='items'
placeholder='Comma-separated items'
value='Kirk, Spock, Sulu, Uhura' />
<hr /> <label>Result:</label>
<ul class="list-group">
{{#each items.split(",")}}
<li class="list-group-item">
<strong>{{demonym}} {{@index}}</strong>: {{this}}
</li>
{{/each}}
</ul>
// works with jQuery ($)
cjs.createTemplate($("#ex2code"), {}, $("#ex2"));