AngularJS手动表单验证

2019-11-20 10:38:38

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所谓手动验证是通过AngularJS表单的属性来验证，而成为AngularJS表单必须满足两个条件：

1、给form元素加上novalidate="novalidate"；

2、给form元素加上name="theForm"，

如下：

<!DOCTYPE html><html lang="en" ng-app="myApp1"><head> <meta charset="UTF-8"> <title></title> <link rel="stylesheet" href="../node_modules/bootstrap/dist/css/bootstrap.min.css"/> <link rel="stylesheet" href="../css/main.css"/></head><body><nav class="navbar navbar-inverse navbar-fixed-top"> <div class="container"> <div class="navbar-header">  <a href="/" class="navbar-brand">Form Submitting</a> </div> </div></nav><div class="container main-content" ng-controller="myCtrl1"> <!--novalidate让表单不要使用html验证--> <!--theForm变成scope的一个字段--> <form ng-submit="onSubmit(theForm.$valid)" novalidate="novalidate" name="theForm"> <div class="form-group">  <label for="name">Name</label>  <input type="text" class="form-control" id="name" ng-model="formModel.name"/> </div> <div class="form-group" ng-class="{  'has-error': !theForm.email.$valid && (!theForm.$pristine || theForm.$submitted),  'has-success': theForm.email.$valid && (!theForm.$pristine || theForm.$submitted)  }">  <label for="email">Email</label>  <input type="email" class="form-control" id="email" ng-model="formModel.email" required="required" name="email"/>  <p class="help-block" ng-show="theForm.email.$error.required && (!theForm.$pristine || theForm.$submitted)">必填</p>  <p class="help-block" ng-show="theForm.email.$error.email && (!theForm.$pristine || theForm.$submitted)">email格式不正确</p> </div> <div class="form-group">  <label for="username">Username</label>  <input type="text" class="form-control" id="username" ng-model="formModel.username"/> </div> <div class="form-group">  <label for="age">Age</label>  <input type="number" class="form-control" id="age" ng-model="formModel.age"/> </div> <div class="form-group">  <label for="sex">Sex</label>  <select name="sex" id="sex" class="form-control" ng-model="formModel.sex">  <option value="">Please choose</option>  <option value="male">Mail</option>  <option value="femail">Femail</option>  </select> </div> <div class="form-group">  <label for="password">Password</label>  <input type="text" class="form-control" id="password" ng-model="formModel.password"/> </div> <div class="form-group">  <button class="btn btn-primary" type="submit">Register</button> </div>  <pre>  {{theForm | json}}  </pre> </form></div><script src="../node_modules/angular/angular.min.js"></script><script src="second.js"></script></body></html>

● 给form加上novalidate="novalidate"意味着表单将不再使用HTML5验证特性
● 给form加上name="theForm"意味着表单的名称是theForm。如何使用theForm,比如我们验证表单是否被修改过theForm.$submitted
● 通过ng-submit提交表单
● formModel是$scope中的一个属性
● 对表单的Email进行了手动验证，使用了AngularJS表单的众多属性，比如theForm.email.$valid，theForm.$pristine，theForm.$submitted， theForm.email.$error.required，theForm.email.$error.email
● 通过<pre>{{theForm | json}}</pre>把AngularJS表单的所有属性都打印出来

{ "$error": { "required": [  {  "$validators": {},  "$asyncValidators": {},  "$parsers": [],  "$formatters": [   null  ],  "$viewChangeListeners": [],  "$untouched": true,  "$touched": false,  "$pristine": true,  "$dirty": false,  "$valid": false,  "$invalid": true,  "$error": {   "required": true  },  "$name": "email",  "$options": null  } ] }, "$name": "theForm", "$dirty": false, "$pristine": true, "$valid": false, "$invalid": true, "$submitted": false, "email": { "$validators": {}, "$asyncValidators": {}, "$parsers": [], "$formatters": [  null ], "$viewChangeListeners": [], "$untouched": true, "$touched": false, "$pristine": true, "$dirty": false, "$valid": false, "$invalid": true, "$error": {  "required": true }, "$name": "email", "$options": null }, "sex": { "$validators": {}, "$asyncValidators": {}, "$parsers": [], "$formatters": [], "$viewChangeListeners": [], "$untouched": true, "$touched": false, "$pristine": true, "$dirty": false, "$valid": true, "$invalid": false, "$error": {}, "$name": "sex", "$options": null }}

以上，凡是有name属性的input都被显示在上面。

在second.js文件中定义了module,controller以及提交表单的方法。

var myApp1 = angular.module('myApp1',[]);myApp1.controller('myCtrl1', function($scope, $http){ $scope.formModel = {}; $scope.onSubmit = function(){  $http.post('someurl',$scope.formModel)   .success(function(data){    console.log(':)');   })   .error(function(data){    console.log(':(');   });  console.log($scope.formModel); };});

以上的表单验证方式好处是可控性强，但相对繁琐。

以上就是本文的全部内容，希望对AngularJS手动表单验证能够熟练操作。

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