AngularJS的另外一種表單驗證方式是自動驗證，即通過directive來實現，除了AngularJS內建的directive,還需要用到angular-auto-validate這個第三方module。
有關angular-auto-validate：
為了實現錯誤資訊本地化，還需要angular-localize這個第三方module：
<script src="../node_modules/angular-sanitize/angular-sanitize.min.js"></script><script src="../node_modules/angular-localize/angular-localize.min.js"></script>
此外，當點擊提交表單按鈕，需要禁用按鈕並顯示一種等待效果，需要用到angular-ladda這個第三方module:
<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>
頁面如下：
<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讓表單不要使用html驗證--> <!--theForm變成scope的一個欄位--> <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">正在註冊...</span> <span ng-show="!submitting">註冊</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>
先看提交按鈕：
<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">正在註冊...</span> <span ng-show="!submitting">註冊</span> </button></div>
再拿表單中的Age欄位來說：
<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為AgularJS的directive,而ng-min-err-type是angular-auto-validate的directive。這裡遵循的慣例是ng-AngularJS表單驗證的directive名稱-err-type，而tooYoung和tooOld的作用是什麼，又是在哪裡用上了呢？
是在module層面用上了，定義在了form_validation_auto.js檔案中。
var myApp1 = angular.module('myApp1',['jcs-autoValidate','localize','angular-ladda']);myApp1.run(function(defaultErrorMessageResolver){ defaultErrorMessageResolver.getErrorMessages().then(function(errorMessages){ errorMessages['tooYoung'] = '年齡必須小於{0}'; errorMessages['tooOld'] = '年齡不能大於{0}'; errorMessages['badUsername'] = '使用者名稱只能包含數字、字母或底線'; });});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內容，希望對AngularJS手動表單驗證能夠熟練操作。
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