AngularJs ng消息不能正常工作

I am trying to make a validation with ng-messages in AngularJs 1.6.4.

我正在尝试用AngularJs 1.6.4中的ng消息进行验证。

But as soon as I type in in the form it shows all 3 ng-messages, and after that they won't go away until a page refresh. So even when the maxlength isn't reached it shows "your name is required".

但是，只要我输入表单，它就会显示所有3条ng-message，之后它们就不会消失，直到页面刷新。因此，即使没有到达maxlength，也会显示“您的名字是必需的”。

<form name="userForm" ng-submit="signup(userForm.$valid)" novalidate>

    <!-- First name -->
    <div class="form-group" ng-class="{ 'has-error' : userForm.first_name.$touched && userForm.first_name.$invalid }">

      <label for="example-text-input" class="col-2 col-form-label">First Name</label>
      <div class="col-10">

        <input class="form-control" type="text" placeholder="Please enter your first name"
            name="first_name"
            ng-model="user.first_name"
            ng-minlength="2"
            ng-maxlength="25"
            required>

        <div class="help-block" ng-messages="userForm.first_name.$error" ng-if="userForm.first_name.$touched">
            <p ng-message="minlength">Your name is too short.</p>
            <p ng-message="maxlength">Your name is too long.</p>
            <p ng-message="required">Your name is required.</p>
        </div>

      </div>
    </div>
</form>

EDIT

编辑

Solved it by adding the ngMessages to my modules and adding the script tag in my index.html

通过向我的模块添加ngmessage并在index.html中添加脚本标记来解决这个问题

2 个解决方案

#1

Your code work for me perfectly. check plunker link

你的代码非常适合我。检查砰砰作响的链接

Injecte ngmessage in your desired module.

在所需的模块中注入ngmessage。

angular.module('app', ['ngMessages'])

add angular message file in your project.

在项目中添加角消息文件。

 <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.4.0/angular‌-messages.js"></scri‌pt>

#2

                 <input class="form-control" type="text" placeholder="Please enter your first name"
        name="first_name"
        ng-model="user.first_name"
        minlength="2"
        maxlength="25"
        ng-required="true"/>

                 <div ng-messages="userForm.first_name.$error" ng-show="userForm.first_name.$touched" >
                    <span ng-message="required"  class="error">Required</span>
                    <span ng-message="minlength">Minimum 2</span>

Maximum 25

最大的25

                 </div>

#1