Question

我正在对required进行简单验证，但无法找到错误输入或点击提交的ng-Message。有人可以帮我解决我错在哪里吗？

HTML：

<html>
<head>
    <!-- Script Files --> 
    <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.8/angular.min.js"></script>
    <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular-messages.js"></script>
</head>
<body ng-app="myApp" ng-controller="myCtrl">

    <form name="form1" id="form1" novalidate> 
        <input type="text" name="age" ng-minlength="3" required/> 
        <div ng-messages="form1.age.$error" ng-show="(form1.age.$error.required || form1.age.$error.minlength) && (form1.age.$touched || form1.$submitted) " >
            <div ng-message="required">This is required</div>
            <div ng-message="minlength">Length is too less</div>

        </div>
        <a data-ng-click="submit(form1.$invalid)">Click</a> 
    </form>

    <script>
    //module declaration
    var app = angular.module('myApp', ['ngMessages']);
    //controller declaration
    app.controller('myCtrl', function($scope) {
        var submit = function(invalid){
            if(invalid) return;
        }
    });
    </script>
</body>
</html>

Answer 1

您的年龄输入没有ng-model。验证aláminlength仅在ng-model存在时才有效：

<input type="text" name="age" ng-model="age" ng-minlength="3" required/>

这是由于验证器的工作原理。当$ valid为false时，您会注意到未设置ng-model。文档中也总是有一个提示：https://docs.angularjs.org/api/ng/directive/ngMinlength

同样ng-model不必与字段名称相同。

ngMessage在AngularJs中不起作用

1 个答案: