AngularJS表单和输入验证实例


Posted in Javascript onNovember 02, 2016

AngularJS 表单和控件可以提供验证功能,并对用户输入的非法数据进行警告。

注意:客户端的验证不能确保用户输入数据的安全,所以服务端的数据验证也是必须的。

1、HTML 控件

以下 HTML input 元素被称为 HTML 控件:input 元素、select 元素、button 元素、textarea 元素。

2、HTML 表单

 AngularJS 表单是输入控件的集合。HTML 表单通常与 HTML 控件同时存在。

<!DOCTYPE html> 
<html> 
<head> 
<meta charset="utf-8" /> 
<title>angularJs</title> 
<script src="js/angular.min.js" type="text/javascript" charset="utf-8"></script> 
</head> 
<body> 
<div ng-app="myApp" ng-controller="formCtrl"> 
 <form novalidate> 
  First Name:<br> 
  <input type="text" ng-model="user.firstName"><br> 
  Last Name:<br> 
  <input type="text" ng-model="user.lastName"> 
  <br><br> 
  <button ng-click="reset()">RESET</button> 
 </form> 
 <p>form = {{user }}</p> 
 <p>master = {{master}}</p> 
</div> 
<script> 
var app = angular.module('myApp', []); 
app.controller('formCtrl', function($scope) { 
  $scope.master = {firstName:"John", lastName:"Doe"}; 
  $scope.reset = function() { 
    $scope.user = angular.copy($scope.master); 
  }; 
  $scope.reset(); 
}); 
</script> 
</body> 
</html>

AngularJS表单和输入验证实例

3、输入验证

AngularJS 表单和控件可以提供验证功能,并对用户输入的非法数据进行警告。客户端的验证不能确保用户输入数据的安全,所以服务端的数据验证也是必须的。

<!DOCTYPE html> 
<html> 
<head> 
<meta charset="utf-8" /> 
<title>angularJs</title> 
<script src="js/angular.min.js" type="text/javascript" charset="utf-8"></script> 
</head> 
<body> 
<h2>验证实例</h2> 
<form ng-app="myApp" ng-controller="validateCtrl" name="myForm" novalidate> 
<p>用户名: 
<input type="text" name="user" ng-model="user" required> 
<span style="color:red" ng-show="myForm.user.$dirty && myForm.user.$invalid"> 
<span ng-show="myForm.user.$error.required">用户名是必须的。</span> 
</span> 
</p> 
<p>邮  箱: 
<input type="email" name="email" ng-model="email" required> 
<span style="color:red" ng-show="myForm.email.$dirty && myForm.email.$invalid"> 
<span ng-show="myForm.email.$error.required">邮箱是必须的。</span> 
<span ng-show="myForm.email.$error.email">非法的邮箱地址。</span> 
</span> 
</p> 
<p> 
<input type="submit" 
ng-disabled="myForm.user.$dirty && myForm.user.$invalid ||  
myForm.email.$dirty && myForm.email.$invalid"> 
</p> 
</form> 
<script> 
var app = angular.module('myApp', []); 
app.controller('validateCtrl', function($scope) { 
  $scope.user = 'John Doe'; 
  $scope.email = 'john.doe@gmail.com'; 
}); 
</script> 
</body> 
</html>

AngularJS表单和输入验证实例

AngularJS ng-model 指令用于绑定输入元素到模型中。模型对象有两个属性: user 和 email。我们使用了 ng-show指令,color:red 在邮件是 $dirty 或 $invalid 才显示。
AngularJS表单和输入验证实例

没用初始值的输入验证:注意ng-app="",ng-app有值就必须连接到代码模块,利用angular.module 函数来创建模块。
 

<!DOCTYPE html> 
<html> 
<head> 
<meta charset="utf-8" /> 
<title>angularJs</title> 
<script src="js/angular.min.js" type="text/javascript" charset="utf-8"></script> 
</head> 
<body> 
<h2>验证实例</h2> 
<form ng-app="" name="myForm" novalidate> 
<p>用户名: 
<input type="text" name="user" ng-model="user" required> 
<span style="color:red" ng-show="myForm.user.$dirty && myForm.user.$invalid"> 
<span ng-show="myForm.user.$error.required">用户名是必须的。</span> 
</span> 
</p> 
<p>邮  箱: 
<input type="email" name="email" ng-model="email" required> 
<span style="color:red" ng-show="myForm.email.$dirty && myForm.email.$invalid"> 
<span ng-show="myForm.email.$error.required">邮箱是必须的。</span> 
<span ng-show="myForm.email.$error.email">非法的邮箱地址。</span> 
</span> 
</p> 
<p> 
<input type="submit" 
ng-disabled="myForm.user.$dirty && myForm.user.$invalid ||  
myForm.email.$dirty && myForm.email.$invalid"> 
</p> 
</form> 
</body> 
</html>

AngularJS表单和输入验证实例

4、ng-disabled实例

<!doctype html> 
<html ng-app="MyApp"> 
  <head> 
    <script src="js/angular.min.js"></script> 
  </head> 
  <body> 
    <div ng-controller="Controller"> 
      <form name="form" class="css-form" novalidate> 
        Name: 
        <input type="text" ng-model="user.name" name="uName" required /><br/> 
        E-mail: 
        <input type="email" ng-model="user.email" name="uEmail" required /><br/> 
        <div ng-show="form.uEmail.$dirty && form.uEmail.$invalid"> 
          Invalid: 
          <span ng-show="form.uEmail.$error.required">Tell us your email.</span> 
          <span ng-show="form.uEmail.$error.email">This is not a valid email.</span> 
        </div> 
        Gender:<br/> 
        <input type="radio" ng-model="user.gender" value="male" /> 
        male 
        <input type="radio" ng-model="user.gender" value="female" /> 
        female<br/> 
        <input type="checkbox" ng-model="user.agree" name="userAgree" required /> 
        I agree: 
        <input ng-show="user.agree" type="text" ng-model="user.agreeSign" required /> 
        <div ng-show="!user.agree || !user.agreeSign"> 
          Please agree and sign. 
        </div> 
        <br/> 
        <!--ng-disabled为true时禁止使用,ng-disabled实时监控应用程序--> 
        <button ng-click="reset()" ng-disabled="isUnchanged(user)"> 
          RESET 
        </button> 
        <button ng-click="update(user)" ng-disabled="form.$invalid || isUnchanged(user)"> 
          SAVE 
        </button> 
      </form> 
    </div> 
  <script type="text/javascript"> 
    var app=angular.module("MyApp",[]); 
    app.controller("Controller",function($scope){ 
      $scope.master = {}; 
      $scope.update=function(user){ 
        $scope.master=$scope.copy(user); 
      }; 
      $scope.reset=function(){ 
        $scope.user=angular.copy($scope.master); 
      }; 
      $scope.isUnchanged=function(user){ 
        //判断user和$scope.master是否相等,相等返回true,否则返回false 
        return angular.equals(user,$scope.master); 
      }; 
      $scope.reset(); 
    }); 
  </script> 
  </body> 
</html>

AngularJS表单和输入验证实例

5、ng-submit实例

<html ng-app='TestFormModule'> 
  <head> 
    <meta http-equiv="content-type" content="text/html; charset=utf-8" /> 
    <script src="js/angular.min.js"></script> 
  </head> 
  <body><!--ng-submit绑定表单提交事件--> 
    <form name="myForm" ng-submit="save()" ng-controller="TestFormModule"> 
       <input name="userName" type="text" ng-model="user.userName" required/> 
       <input name="password" type="password" ng-model="user.password" required/><br /> 
       <input type="submit" ng-disabled="myForm.$invalid"/> 
    </form> 
  </body> 
  <script type="text/javascript"> 
    var app=angular.module("TestFormModule",[]); 
    app.controller("TestFormModule",function($scope){ 
      $scope.user={ 
        userName:"山水子农", 
        password:'' 
      }; 
      $scope.save=function(){ 
        console.log("保存数据中..."); 
      } 
    }); 
  </script> 
</html>

AngularJS表单和输入验证实例

6、maxlength和minlength实例

<!DOCTYPE html> 
<html> 
  <head> 
    <meta charset="UTF-8"> 
    <script src="js/angular.js" type="text/javascript" charset="utf-8"></script> 
    <title>表单验证</title> 
  </head> 
  <body ng-app="myApp" > 
  <div ng-controller="myCtrl"> 
  <form name="form"> 
   <label for="maxlength">Set a maxlength: </label> 
   <input type="number" ng-model="maxlength" id="maxlength" /><br> 
   <label for="minlength">Set a minlength: </label> 
   <input type="number" ng-model="minlength" id="minlength" /><br><hr> 
   <label for="input">This input is restricted by the current maxlength and minlength: </label><br> 
   <input type="text" ng-model="textmodel" id="text" name="text" ng-maxlength="maxlength" ng-minlength="minlength"/><br> 
   text input valid? = <code>{{form.text.$valid}}</code><br> 
   text model = <code>{{textmodel}}</code><br><hr> 
   <label for="input">This input is restricted by the current maxlength and minlength: </label><br> 
   <input type="number" ng-model="numbermodel" id="number" name="number" ng-maxlength="maxlength" ng-minlength="minlength"/><br> 
   number input valid? = <code>{{form.number.$valid}}</code><br> 
   number model = <code>{{numbermodel}}</code> 
  </form> 
  </div>   
  <script type="text/javascript"> 
    var app=angular.module("myApp",[]); 
    app.controller("myCtrl",function($scope){ 
      $scope.maxlength=8; 
      $scope.minlength=4; 
    }); 
  </script> 
  </body> 
</html>

AngularJS表单和输入验证实例

7、ng-class实例

<!DOCTYPE html> 
<html> 
  <head> 
    <meta charset="UTF-8"> 
    <script src="js/angular.js" type="text/javascript" charset="utf-8"></script> 
    <title>表单验证</title> 
    <style type="text/css"> 
    .deleted { 
     text-decoration: line-through; 
    } 
    .bold { 
     font-weight: bold; 
    } 
    .red { 
     color: red; 
    } 
    .error { 
     color: red; 
     background-color: yellow; 
    } 
    .base-class { 
     transition:all cubic-bezier(0.250, 0.460, 0.450, 0.940) 0.5s; 
    } 
    .base-class.my-class { 
     color: red; 
     font-size:3em; 
    } 
    </style> 
  </head> 
  <body ng-app="myApp" > 
  <div ng-controller="myCtrl"> 
  <form name="form"> 
    <p ng-class="{deleted: deleted, bold: bold, 'error': error}">Map Syntax Example</p> 
    <label><input type="checkbox" ng-model="deleted">deleted (apply "deleted" class)</label><br> 
    <label><input type="checkbox" ng-model="bold">bold (apply "bold" class)</label><br> 
    <label><input type="checkbox" ng-model="error">error (apply "error" class)</label> 
    <hr> 
    <input id="setbtn" type="button" value="set" ng-click="myVar='my-class'"> 
    <input id="clearbtn" type="button" value="clear" ng-click="myVar=''"> 
    <br> 
    <span class="base-class" ng-class="myVar">Sample Text</span> 
  </form> 
  </div>   
  <script type="text/javascript"> 
    var app=angular.module("myApp",[]); 
    app.controller("myCtrl",function($scope){ 
    }); 
  </script> 
  </body> 
</html><strong> 
</strong>

AngularJS表单和输入验证实例

8、ng-if实例

<!DOCTYPE html> 
<html> 
  <head> 
    <meta charset="UTF-8"> 
    <script src="js/angular.js" type="text/javascript" charset="utf-8"></script> 
    <title>表单验证</title> 
    <style> 
    .animate-if { 
     width:400px; 
     border:2px solid yellowgreen; 
     border-radius: 10px; 
     padding:10px; 
     display: block; 
    }  
    </style> 
  </head> 
  <body ng-app="myApp" > 
  <div ng-controller="myCtrl"> 
  <form name="form"> 
    <label>Click me: <input type="checkbox" ng-model="checked" ng-init="checked=true" /></label><br/> 
    Show when checked: 
    <span ng-if="checked" class="animate-if"> 
    This is removed when the checkbox is unchecked. 
    </span> 
  </form> 
  </div>   
  <script type="text/javascript"> 
    var app=angular.module("myApp",[]); 
    app.controller("myCtrl",function($scope){ 
    }); 
  </script> 
  </body> 
</html>

AngularJS表单和输入验证实例

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持三水点靠木。

Javascript 相关文章推荐
JQuery datepicker 使用方法
May 20 Javascript
jquery 倒计时效果实现秒杀思路
Sep 11 Javascript
javascript实现连续赋值
Aug 10 Javascript
基于Jquery easyui 选中特定的tab
Nov 17 Javascript
使用微信内置浏览器点击下拉框出现页面乱跳转现象(iphone),该怎么办
Jan 04 Javascript
javascript正则表达式中分组详解
Jul 17 Javascript
分享一道关于闭包、bind和this的面试题
Feb 20 Javascript
JS实现非首屏图片延迟加载的示例
Jan 06 Javascript
微信小程序实现美团菜单
Jun 06 Javascript
vue 录制视频并压缩视频文件的方法
Jul 27 Javascript
JS实现图片切换特效
Dec 23 Javascript
Element Backtop回到顶部的具体使用
Jul 27 Javascript
AngularJS入门教程之数据绑定原理详解
Nov 02 #Javascript
深入理解Node.js 事件循环和回调函数
Nov 02 #Javascript
JavaScript 数组的深度复制解析
Nov 02 #Javascript
AngularJS实现与Java Web服务器交互操作示例【附demo源码下载】
Nov 02 #Javascript
Centos7 中 Node.js安装简单方法
Nov 02 #Javascript
AngularJS入门教程之与服务器(Ajax)交互操作示例【附完整demo源码下载】
Nov 02 #Javascript
用AngularJS来实现监察表单按钮的禁用效果
Nov 02 #Javascript
You might like
xml在joomla表单中的应用详解分享
2012/07/19 PHP
PHP内核探索:变量概述
2014/01/30 PHP
PHP文件上传判断file是否己选择上传文件的方法
2014/11/10 PHP
Yii框架批量插入数据扩展类的简单实现方法
2017/05/23 PHP
几款极品的javascript压缩混淆工具
2007/05/16 Javascript
js 颜色选择器(兼容firefox)
2009/03/05 Javascript
js文件中调用js的实现方法小结
2009/10/23 Javascript
JS DOM 操作实现代码
2010/08/01 Javascript
Javascript动态引用CSS文件的2种方法介绍
2014/06/06 Javascript
返回函数的JavaScript函数
2016/06/14 Javascript
JS查找字符串中出现次数最多的字符
2016/09/05 Javascript
nodejs利用ajax实现网页无刷新上传图片实例代码
2017/06/06 NodeJs
vue.js实现条件渲染的实例代码
2017/06/22 Javascript
Vue2.0实现将页面中表格数据导出excel的实例
2017/08/09 Javascript
微信小程序block的使用教程
2018/04/01 Javascript
使用vuex的state状态对象的5种方式
2018/04/19 Javascript
vue使用自定义icon图标的方法
2018/05/14 Javascript
JS实现获取进今年第几天是周几的方法分析
2018/06/27 Javascript
在Vue环境下利用worker运行interval计时器的步骤
2019/08/01 Javascript
JS实现关闭小广告特效
2021/01/29 Javascript
Python open()文件处理使用介绍
2014/11/30 Python
django之session与分页(实例讲解)
2017/11/13 Python
Python跨文件全局变量的实现方法示例
2017/12/10 Python
酷! 程序员用Python带你玩转冲顶大会
2018/01/17 Python
Python登录注册验证功能实现
2018/06/18 Python
浅谈Python的条件判断语句if/else语句
2019/03/21 Python
解决Python3用PIL的ImageFont输出中文乱码的问题
2019/08/22 Python
导入tensorflow时报错:cannot import name 'abs'的解决
2019/10/10 Python
python requests模拟登陆github的实现方法
2019/12/26 Python
如何搭建pytorch环境的方法步骤
2020/05/06 Python
Python3爬虫里关于Splash负载均衡配置详解
2020/07/10 Python
美国机场停车位预订:About Airport Parking
2018/03/26 全球购物
abstract class和interface有什么区别?
2012/01/03 面试题
心理健康心得体会
2014/01/02 职场文书
社区交通安全实施方案
2014/03/22 职场文书
Python数据可视化之用Matplotlib绘制常用图形
2021/06/03 Python