bootstrap输入框组件使用方法详解

<div class="input-group">
 <span class="input-group-addon">@</span>
 <input type="text" class="form-control" placeholder="Username">
</div>

<div class="input-group">
 <input type="text" class="form-control">
 <span class="input-group-addon">.00</span>
</div>

<div class="input-group">
 <span class="input-group-addon">$</span>
 <input type="text" class="form-control">
 <span class="input-group-addon">.00</span>
</div>

<div class="input-group input-group-lg">
 <span class="input-group-addon">@</span>
 <input type="text" class="form-control" placeholder="Username">
</div>

<div class="input-group">
 <span class="input-group-addon">
  <input type="radio"/> 
 </span>
 <input type="text" class="form-control"/>
</div>

<div class="input-group">
 <span class="input-group-addon">
  <input type="checkbox">
 </span>
 <input type="text" class="form-control">
</div>

<div class="input-group">
 <span class="input-group-btn">
  <button type="button" class="btn btn-default">Go</button>
 </span>
 <input type="text" class="form-control" />
</div>

<div class="input-group">
 <div class="input-group-btn">
 <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
  Action 
  <span class="caret"></span>
 </button>
 <ul class="dropdown-menu" role="menu">
  <li><a href="#">Action</a></li>
  <li><a href="#">Another action</a></li>
  <li><a href="#">Something else here</a></li>
  <li class="divider"></li>
  <li><a href="#">Separated link</a></li>
 </ul>
 </div>
 <input type="text" class="form-control">
</div>

<div class="input-group">
 <div class="input-group-btn">
 <button type="button" class="btn btn-default">Action</button>
 <button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown">
  <span class="caret"></span>
 </button>
 <ul class="dropdown-menu" role="menu">
  <li><a href="#">Action</a></li>
  <li><a href="#">Another action</a></li>
  <li><a href="#">Something else here</a></li>
  <li class="divider"></li>
  <li><a href="#">Separated link</a></li>
 </ul>
 </div>
 <input type="text" class="form-control">
</div>