Bootstrap系列 -- 20. 禁用状态

<h3>示例1</h3>
<form role="form" class="form-horizontal">
  <div class="form-group">
    <div class="col-xs-6">
      <input class="form-control input-lg" type="text" placeholder="不是焦点状态下效果">
    </div>
    <div class="col-xs-6">
      <input class="form-control input-lg" id="disabledInput" type="text" placeholder="表单已被禁用，不可输入" disabled>
    </div>
  </div> 
</form> 
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<h3>示例2</h3>   
<form role="form">
  <fieldset disabled>
    <div class="form-group">
      <label for="disabledTextInput">禁用的输入框</label>
      <input type="text" id="disabledTextInput" class="form-control" placeholder="禁止输入">
    </div>
    <div class="form-group">
      <label for="disabledSelect">禁用的下拉框</label>
      <select id="disabledSelect" class="form-control">
        <option>不可选择</option>
      </select>
    </div>
    <div class="checkbox">
      <label>
        <input type="checkbox"> 无法选择
      </label>
    </div>
    <button type="submit" class="btn btn-primary">提交</button>
  </fieldset>
</form> 
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<h3>示例3</h3>
<form role="form">
  <fieldset disabled>
    <legend><input type="text" class="form-control" placeholder="显然我颜色变灰了，但是我没被禁用，不信？单击试一下" /></legend>
    <div class="form-group">
      <label for="disabledTextInput">禁用的输入框</label>
      <input type="text" id="disabledTextInput" class="form-control" placeholder="禁止输入">
    </div>
    <div class="form-group">
      <label for="disabledSelect">禁用的下拉框</label>
      <select id="disabledSelect" class="form-control">
        <option>不可选择</option>
      </select>
    </div>
    <div class="checkbox">
      <label>
        <input type="checkbox"> 无法选择
      </label>
    </div>
    <button type="submit" class="btn btn-primary">提交</button>
  </fieldset>
</form>