angularjs 表单验证ngMessages和创建自定义指令结合

最新推荐文章于 2020-12-23 03:04:09 发布

原创最新推荐文章于 2020-12-23 03:04:09 发布 · 100 阅读

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本文介绍了一个使用Angular框架实现的表单验证示例。通过定义HTML表单和Angular指令，演示了如何对用户输入进行长度限制并显示错误消息。文章包含了完整的HTML和JavaScript代码，展示了如何集成Angular及其消息插件来实现即时反馈。

index.html

 1 <!doctype html>
 2 <html >
 3 <head>
 4     <meta charset="utf-8">
 5 </head>
 6 <style>
 7     /*input.ng-invalid {
 8         border: 1px solid red;
 9     }
10     input.ng-valid {
11         border: 1px solid green;
12     }*/
13 </style>
14 <script src="js/angular.js"></script>
15 <script src="js/clock.js"></script>
16 <script src="js/angular-messages.js"></script>
17 <script src="js/angular-messages.min.js"></script>
18 <body ng-app="myApp">
19 <form name="form1" novalidate ng-submit="signupForm()" ng-controller="signupController">
20     <label>Your name</label>
21     <input type="text" placeholder="Name" ng-model="name" name="name" ng-minlength="3"
22            ng-maxlength="20" required >
23     <div class="error" ng-messages="form1.name.$error" >
24         <my-error></my-error>
25     </div>
26     <button type="submit">Submit</button>
27 </form>
28 </body>
29 </html>

clock.js

1 var app=angular.module('myApp',['ngMessages']);
2 app.directive('myError',function(){
3           return{
4               restrict:'EAC',
5              template:'<div ng-message="required">请输入用户名 </div> <div ng-message="minlength">少于3位</div> <div ng-message="maxlength">多余20位</div>'
6           }
7 })