angularjs表单验证

<div class="col-md-6">
            <div class="form-group">
              <label>手机号<span class="symbol required"></span></label>
              <input ng-model="cellphone" name="cellphone" type="tel" ng-pattern="/^[1][358][0-9]{9}$/"
                     class="form-control" required/>
               <p>
                        <span style="color: red" ng-show="Form.availableShipQty.$invalid">
                        <span ng-show="Form.cellphone.$error.cellphone">请输入正确的手机号</span>
                         </span>

                  </p>
          </div>
</div>