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? ? <div class="form-group has-warning has-feedback">

? ? <label class="control-label" for="inputWarning1">警告狀態(tài)</label>

? ? <input type="emali" class="form-control" id="inputWarning1" placeholder="emali">

? ? <span class="glyphicon glyphicon-warning-sign form-control-feedback"></span>

? ? </div>

因為你少了前面的label? 且有class control-label

<div class="form-group has-warning "> 這里邊少個樣式 has-feedback