AngularJS自动表单验证

2019-11-20 10:38:33

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AngularJS的另外一种表单验证方式是自动验证，即通过directive来实现，除了AngularJS自带的directive,还需要用到angular-auto-validate这个第三方module。

有关angular-auto-validate：

安装：npm i angular-auto-validate
引用：<script src="../node_modules/angular-auto-validate/dist/jcs-auto-validate.min.js"></script>
module依赖：var myApp = angular.module("app", ["jcs-autoValidate"]);

为了实现错误信息本地化，还需要angular-localize这个第三方module：

安装：npm install angular-localize --save
module依赖：var myApp = angular.module("app", ["localize"]);
引用：

<script src="../node_modules/angular-sanitize/angular-sanitize.min.js"></script><script src="../node_modules/angular-localize/angular-localize.min.js"></script>

此外，当点击提交表单按钮，需要禁用按钮并显示一种等待效果，需要用到angular-ladda这个第三方module:

安装：bower install angular-ladda --save
module依赖：var myApp = angular.module("app", ["angular-ladda"]);
引用：

<link rel="stylesheet" href="../bower_components/ladda/dist/ladda-themeless.min.css"/><script src="../bower_components/ladda/dist/spin.min.js"></script><script src="../bower_components/ladda/dist/ladda.min.js"></script><script src="../bower_components/angular-ladda/dist/angular-ladda.min.js"></script>

页面如下：

<html><head> <meta charset="gb2312"> <title></title> <link rel="stylesheet" href="../node_modules/bootstrap/dist/css/bootstrap.min.css"/> <link rel="stylesheet" href="../bower_components/ladda/dist/ladda-themeless.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 Validating Auto</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()" novalidate="novalidate"> <div class="form-group">  <label for="name" class="control-label">Name</label>  <input type="text" class="form-control" id="name" ng-model="formModel.name" required="required"/> </div> <div class="form-group">  <label for="email" class="control-label">Email</label>  <input type="email" class="form-control" id="email" ng-model="formModel.email" required="required"/> </div> <div class="form-group">  <label for="username" class="control-label">Username</label>  <input type="text"    class="form-control"    id="username"    ng-model="formModel.username"    required="required"    ng-pattern="/^[A-Za-z0-9_]{1,32}$/"    ng-minlength="7"    ng-pattern-err-type="badUsername"  /> </div> <div class="form-group">  <label for="age" class="control-label">Age</label>  <input type="number"    class="form-control"    id="age"    ng-model="formModel.age"    required="required"    min="18"    max="65"    ng-min-err-type="tooYoung"    ng-max-err-type="tooOld"  /> </div> <div class="form-group">  <label for="sex" class="control-label">Sex</label>  <select name="sex" id="sex" class="form-control" ng-model="formModel.sex" required="required">  <option value="">Please choose</option>  <option value="male">Mail</option>  <option value="femail">Femail</option>  </select> </div> <div class="form-group">  <label for="password" class="control-label">Password</label>  <input type="text" class="form-control" id="password" ng-model="formModel.password" required="required" ng-minlength="6"/> </div> <div class="form-group">  <!--<button class="btn btn-primary" ng-click="onSubmit()">Register</button>-->  <button class="btn btn-primary"    ladda = "submitting"    data-style="expand-right"    type="submit">  <span ng-show="submitting">正在注册...</span>  <span ng-show="!submitting">注册</span>  </button> </div>  <pre>  {{formModel | json}}  </pre> </form></div><script src="../node_modules/angular/angular.min.js"></script><script src="form_validation_auto.js"></script><script src="../node_modules/angular-auto-validate/dist/jcs-auto-validate.min.js"></script><script src="../node_modules/angular-sanitize/angular-sanitize.min.js"></script><script src="../node_modules/angular-localize/angular-localize.min.js"></script><script src="../bower_components/ladda/dist/spin.min.js"></script><script src="../bower_components/ladda/dist/ladda.min.js"></script><script src="../bower_components/angular-ladda/dist/angular-ladda.min.js"></script></body></html>

先看提交按钮：

<div class="form-group"> <!--<button class="btn btn-primary" ng-click="onSubmit()">Register</button>--> <button class="btn btn-primary"   ladda = "submitting"   data-style="expand-right"   type="submit"> <span ng-show="submitting">正在注册...</span> <span ng-show="!submitting">注册</span> </button></div>

ladda属性值为bool值，true表示显示动态等待效果，false不显示动态等待效果，这里的submitting是scope中的一个属性
data-style="expand-right"表示在按钮的右侧显示动态等待效果

再拿表单中的Age字段来说：

<div class="form-group"> <label for="age" class="control-label">Age</label> <input type="number"   class="form-control"   id="age"   ng-model="formModel.age"   required="required"   min="18"   max="65"   ng-min-err-type="tooYoung"   ng-max-err-type="tooOld" /></div>

其中,min, max为AgularJS的directive,而ng-min-err-type是angular-auto-validate的directive。这里遵循的惯例是ng-AngularJS表单验证的directive名称-err-type，而tooYoung和tooOld的作用是什么，又是在哪里用上了呢？

是在module层面用上了，定义在了form_validation_auto.js文件中。

var myApp1 = angular.module('myApp1',['jcs-autoValidate','localize','angular-ladda']);myApp1.run(function(defaultErrorMessageResolver){ defaultErrorMessageResolver.getErrorMessages().then(function(errorMessages){  errorMessages['tooYoung'] = '年龄必须小于{0}';  errorMessages['tooOld'] = '年龄不能大于{0}';  errorMessages['badUsername'] = '用户名只能包含数字、字母或下划线'; });});myApp1.controller('myCtrl1', function($scope, $http){ $scope.formModel = {}; $scope.submitting = false; $scope.onSubmit = function(){  $scope.submitting = true;  console.log('已提交');  console.log($scope.formModel);  $http.post('url',$scope.formModel)   .success(function(data){    console.log(':)');    $scope.submitting = false;   })   .error(function(data){    console.log(':(');    $scope.submitting = false;   }); };});

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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