以下的应用：
ng：
ng-pattern
ng-class='{className, condition}' 当条件为真，则使用class
ng-pattern
ng-required
ng-model
ng-minlength
ng-maxlength
ng-disabled
事件：
ng-checked
ng-click
ng-repeat
ng-change
form 字段
Form.field.$dirty 字段被改变
Form.field.$error 字段错误信息
Form.field.$invalid 为通过验证，字段无效
Form.$invalid
Form.$setPristine();
该方法用于设置控制到原始状态。
该方法可以移除'ng-dirty'类并将控制恢复到原始状态('ng-pristine'类)。 其他：
自定义.filter 自定义指令.directive
注意：初始化，和重置
效果：
例子：
index.html
app/index.js
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap.min.css"/>
</head>
<body>
<div ng-app="myApp" style="margin-top: 100px;">
<form name="myForm" action="kittencup.php" ng-controller="firstController" class="container form-horizontal">
<div class="form-group" ng-class="{'has-error':myForm.username.$dirty && myForm.username.$invalid}">
<label class="col-sm-2 control-label">用户名</label>
<div class="col-sm-10">
<input type="text" autocomplete="off" name="username" ng-pattern="/^[a-zA-Z]{1}/" ng-required="true" ng-minlength="5" ng-maxlength="10" ng-model="data.username" class="form-control" placeholder="用户名">
<div ng-show="myForm.username.$dirty && myForm.username.$error.maxlength" class="alert alert-danger help-block">
用户名长度不能超过10位
</div>
<div ng-show="myForm.username.$dirty && myForm.username.$error.minlength" class="alert alert-danger help-block">
用户名长度不能小于5位
</div>
<div ng-show="myForm.username.$dirty && myForm.username.$error.pattern" class="alert alert-danger help-block">
用户名必须已英文字母开始
</div>
</div>
</div>
<div class="form-group" ng-class="{'has-error':myForm.password.$dirty && myForm.password.$invalid}">
<label class="col-sm-2 control-label">密 码</label>
<div class="col-sm-10">
<input type="password" autocomplete="off" name="password" ng-required="true" ng-minlength="5" ng-maxlength="10" ng-model="data.password" class="form-control" placeholder="密码">
<div ng-show="myForm.password.$dirty && myForm.password.$error.maxlength" class="alert alert-danger help-block">
密码长度不能超过10位
</div>
<div ng-show="myForm.password.$dirty && myForm.password.$error.minlength" class="alert alert-danger help-block">
密码长度不能小于5位
</div>
</div>
</div>
<div class="form-group" ng-class="{'has-error':myForm.passwordConfirm.$dirty && myForm.passwordConfirm.$invalid}">
<label class="col-sm-2 control-label">确认密码</label>
<div class="col-sm-10">
<input type="password" autocomplete="off" name="passwordConfirm" ng-required="true" ng-model="data.passwordConfirm" class="form-control" placeholder="确认密码">
<div ng-show="myForm.password.$dirty && myForm.passwordConfirm.$dirty && data.password !== data.passwordConfirm" class="alert alert-danger help-block">
密码和确认密码不一致
</div>
</div>
</div>
<div class="form-group" ng-class="{'has-error':myForm.email.$dirty && myForm.email.$invalid}">
<label class="col-sm-2 control-label">邮箱</label>
<div class="col-sm-10">
<input type="email" autocomplete="off" name="email" ng-required="true" ng-minlength="5" ng-maxlength="30" ng-model="data.email" class="form-control" placeholder="邮箱">
<div ng-show="myForm.email.$dirty && myForm.email.$error.maxlength" class="alert alert-danger help-block">
邮箱长度不能超过30位
</div>
<div ng-show="myForm.email.$dirty && myForm.email.$error.minlength" class="alert alert-danger help-block">
邮箱长度不能小于5位
</div>
<div ng-show="myForm.email.$dirty && myForm.email.$error.email" class="alert alert-danger help-block">
邮箱格式不正确
</div>
</div>
</div>
<div class="form-group" ng-class="{'has-error':myForm.blog.$dirty && myForm.blog.$invalid}">
<label class="col-sm-2 control-label">博客网址</label>
<div class="col-sm-10">
<input type="url" autocomplete="off" name="blog" ng-required="true" ng-minlength="5" ng-maxlength="30" ng-model="data.blog" class="form-control" placeholder="博客网址">
<div ng-show="myForm.blog.$dirty && myForm.blog.$error.maxlength" class="alert alert-danger help-block">
网址长度不能超过30位
</div>
<div ng-show="myForm.blog.$dirty && myForm.blog.$error.minlength" class="alert alert-danger help-block">
网址长度不能小于5位
</div>
<div ng-show="myForm.blog.$dirty && myForm.blog.$error.url" class="alert alert-danger help-block">
网址格式不正确
</div>
</div>
</div>
<div class="form-group" ng-class="{'has-error':myForm.age.$dirty && myForm.age.$invalid}">
<label class="col-sm-2 control-label">年龄</label>
<div class="col-sm-10">
<input type="number" autocomplete="off" name="age" min="10" max="99" ng-required="true" ng-model="data.age" class="form-control" placeholder="年龄">
<div ng-show="myForm.age.$dirty && myForm.age.$error.max" class="alert alert-danger help-block">
年龄不能超过99岁
</div>
<div ng-show="myForm.age.$dirty && myForm.age.$error.min" class="alert alert-danger help-block">
年龄不能小于10岁
</div>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">性别</label>
<div class="col-sm-10">
<label class="radio-inline">
<input type="radio" ng-required="true" name="sex" ng-model="data.sex" value="1" /> 男
</label>
<label class="radio-inline">
<input type="radio" ng-required="true" name="sex" ng-model="data.sex" value="0" /> 女
</label>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">爱好</label>
<div class="col-sm-10">
<label class="checkbox-inline" ng-repeat="hobby in hobbies">
<input type="checkbox" ng-model="hobby.checked" name="hobby[]" ng-checked="data.hobbies === undefined ? false : data.hobbies.indexOf(hobby.id) !== -1" ng-click="toggleHobbySelection(hobby.id)"/> {{hobby.name}}
</label>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">出生地</label>
<div class="col-sm-3">
<select class="form-control" ng-change="data.area = false" ng-model="data.province" ng-options="x.id as x.name for x in cities | cityFilter:0"></select>
</div>
<div class="col-sm-3">
<select class="form-control" ng-show="data.province" ng-model="data.area" ng-options="x.id as x.name for x in cities | cityFilter:data.province"></select>
</div>
<div class="col-sm-3">
<select class="form-control" ng-required="true" ng-show="data.province && data.area" ng-model="data.city" ng-options="x.id as x.name for x in cities | cityFilter:data.area"></select>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">只能输入偶数</label>
<div class="col-sm-10">
<input type="text" name="even" class="form-group" placeholder="偶数" ng-model="data.even" even>
<div ng-show="myForm.even.$error.even" class="alert alert-danger help-block">
数字必须是偶数
</div>
</div>
</div>
<div class="form-group">
<label class="col-sm-2 control-label">个人介绍</label>
<div class="col-sm-10">
<custom-text-area ng-model="data.introduct">aaa</custom-text-area>
<custom-text-area ng-model="data.introduct"></custom-text-area>
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-default" ng-disabled="myForm.$invalid || data.hobbies === undefined || data.hobbies.length === 0">注册</button>
<button type="reset" class="btn btn-default" ng-click="reset()">重置</button>
</div>
</div>
</form>
</div>
<script src="//cdn.bootcss.com/angular.js/1.4.8/angular.js"></script>
<script type="text/javascript" src="app/index.js"></script>
</body>
</html>angular.module('myApp', [])
//城市筛选
.filter('cityFilter', function () {
return function (data, parent) {
var filterData = [];
angular.forEach(data, function (obj) {
if (obj.parent === parent) {
filterData.push(obj);
}
})
return filterData;
}
})
//自定义指令 只能输入偶数
.directive('even',function(){
return {
require : 'ngModel',
link:function(scope,elm,attrs,ngModelController){
ngModelController.$parsers.push(function(viewValue){
if(viewValue % 2 === 0){
ngModelController.$setValidity('even',true);
}else{
ngModelController.$setValidity('even',false);
}
return viewValue;
});
}
};
})
//自定义指令
.directive('customTextArea',function(){
return {
restrict:'E',
template:'<div contenteditable="true"></div>',
replace:true,
require : 'ngModel',
link:function(scope,elm,attrs,ngModelController){
// view->model
elm.on('keyup',function(){
scope.$apply(function(){
ngModelController.$setViewValue(elm.html());
});
})
ngModelController.$render = function(){
elm.html(ngModelController.$viewValue);
}
}
};
})
.controller('firstController', ['$scope', function ($scope) {
var that = this;
$scope.hobbies = [
{
id: 1,
name: '玩游戏'
},
{
id: 2,
name: '写代码'
},
{
id: 3,
name: '睡觉'
},
];
$scope.cities = [
{
name: '上海',
parent: 0,
id: 1
},
{
name: '上海市',
parent: 1,
id: 2
},
{
name: '徐汇区',
parent: 2,
id: 8
},
{
name: '长宁区',
parent: 2,
id: 3
},
{
name: '北京',
parent: 0,
id: 4
},
{
name: '北京市',
parent: 4,
id: 5
},
{
name: '东城区',
parent: 5,
id: 6
},
{
name: '丰台区',
parent: 5,
id: 7
},
{
name: '浙江',
parent: 0,
id: 9
},
{
name: '杭州',
parent: 9,
id: 100
},
{
name: '宁波',
parent: 9,
id: 11
},
{
name: '西湖区',
parent: 100,
id: 12
},
{
name: '北仑区',
parent: 11,
id: 13
}
];
$scope.data = {
hobbies: [1, 2],
city: 3
};
// 先保留一份默认值
$scope.origData = angular.copy($scope.data);
//reset方法
$scope.reset = function(){
$scope.data = angular.copy($scope.origData);
that.initCity();
$scope.myForm.$setPristine();
}
// 让城市关联使用
this.findCityId = function (parent) {
var parentId;
angular.forEach($scope.cities, function (city) {
if (city.id === parent) {
parentId = city.parent;
return;
}
})
return parentId;
}
this.initCity = function(){
if ($scope.data.city !== undefined) {
$scope.data.area = this.findCityId($scope.data.city);
$scope.data.province = this.findCityId($scope.data.area);
}
}
// 第一次打开页面 需要初始化一下
this.initCity.call(this);
$scope.toggleHobbySelection = function (id) {
var index = -1;
//不存在data.hobbies，则值为空数组，否则去查下标
if ($scope.data.hobbies === undefined) {
$scope.data.hobbies = [];
} else {
index = $scope.data.hobbies.indexOf(id);
}
//下标不存在，则加入data.hobbies（添加爱好）
//下标存在，则删除data.hobbies中的id值（删除爱好）
if (index === -1) {
$scope.data.hobbies.push(id);
} else {
$scope.data.hobbies.splice(index, 1);
}
}
}]);