bootstrap下拉框 搜索

                            <div class="form-group">
		                            <label class="col-sm-3 control-label">负责人：</label>
		                            <div class="col-sm-8">
		                                <select data-placeholder="--选择负责人--" name="carOwner" id="type"
		                                        class="form-control chosen-select" tabindex="2" required>
		                                    <option value="">--选择负责人--</option>
		                                </select>
		                            </div>
                        	</div>