angularjs表单验证

最新推荐文章于 2025-08-14 17:31:00 发布

转载最新推荐文章于 2025-08-14 17:31:00 发布 · 50 阅读

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/zf201149/p/10047424.html

文章标签：

#javascript #ViewUI

本文详细介绍如何在Angular中使用内置指令进行表单验证，并通过样式调整反馈验证状态，包括输入字段的有效性检查、触发表单交互及按钮状态控制。

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<!doctype html>
<html lang="en" >

<head>
<meta charset="utf-8">
<title>test</title>
<link rel="stylesheet" href="lib/bootstrap.min.css">
<script src="lib/angular.min.js"></script>
<style>

        .error{
color:red;
        }
        .sky {
color:white;
background-color:lightblue;
        }
        .tomato {
background-color:coral;
        }
</style>
</head>

<body ng-app="myapp" ng-controller="mainController">
<form name="myform">
<label>username:</label>
<input name="username"
             ng-model="username"
             ng-maxlength="50"
             ng-minlength="1"
             required>

<pre>myform.username.$invalid:{{myform.username.$invalid}}</pre>
<pre>myform.username.$touched:{{myform.username.$touched}}</pre>
<pre>myform.username.$dirty:{{myform.username.$dirty}}</pre>
<div ng-if="myform.username.$invalid && myform.username.$touched">please input username</div>
<input name="username2"
             ng-model="username2"
             ng-maxlength="5"
             ng-minlength="1"
             required>
<div ng-if="myform.username2.$invalid && myform.username2.$touched">please input username2</div>
<br><br>
<div>
<button class="btn btn-primary" ng-disabled="myform.$invalid"
                  ng-class="{true: 'sky', false: 'tomato'}[myform.$invalid]">submit</button>
</div>

<div>
<select name="birthD" ng-model="site" ng-options="x.site for x in sites">
<option value="">-- 请选择 --</option>
</select>
<pre>site:{{site}}</pre>      </div>  </form>  <script src="js/app.js"></script></body></html>