AngularJS自动表单验证

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。