本文主要包含AngularJS自动表单验证等相关知识,希望在学习及工作中可以帮助到您
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></div>
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></div>
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>
</div>
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></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></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