MrFant
6/9/2018 - 7:49 AM
AngularJS demo
some demos show AngularJS features
<!--controller 中，如果局部 $scope 和 $rootScope 都存在，且有相同名字的变量-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.bootcss.com/angular.js/1.4.6/angular.min.js"></script>
</head>
<body ng-app="myApp">
<div ng-controller="myCtrl"> //输出结果
{{first}}<br> //ctrl局部first
{{$root.first}}<br> //全局first
{{second}}<br> //全局second
{{$root.second}}<br> //全局second
</div>
<br>
<br>
<div ng-controller="myCtrl2">
{{first}}<br> //全局first
{{$root.first}}<br> //全局first
{{second}}<br> //ctrl2局部second
{{$root.second}} //全局second
</div>
</body>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function ($scope,$rootScope) {
$scope.first = 'ctrl局部first';
$rootScope.first = '全局first';
});
app.controller('myCtrl2', function ($scope,$rootScope) {
$scope.second = 'ctrl2局部second';
$rootScope.second = '全局second';
});
</script>
</html><!--注意自定义的service不能用$开头-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.bootcss.com/angular.js/1.4.6/angular.min.js"></script>
</head>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<p>255 的16进制是:</p>
<h1>{{hex}}</h1>
</div>
<p>自定义服务，用于转换16进制数：</p>
<script>
var app = angular.module('myApp', []);
app.service('hexafy', function() {
this.myFunc = function (x) {
return x.toString(16);
}
});
app.controller('myCtrl', function($scope, hexafy) {
$scope.hex = hexafy.myFunc(255);
});
</script>
</body>
</html>
<!--filter 依赖于自定义的服务，在定义filter的时候要注入依赖-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.bootcss.com/angular.js/1.4.6/angular.min.js"></script>
</head>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<p>在获取数组 [255, 251, 200] 值时使用过滤器:</p>
<ul>
<li ng-repeat="x in counts">{{x | myFormat}}</li>
</ul>
<p>过滤器使用服务将10进制转换为16进制。</p>
</div>
<script>
var app = angular.module('myApp', []);
app.service('hexafy', function() {
this.myFunc = function (x) {
return x.toString(16);
}
});
app.filter('myFormat',['hexafy', function(hexafy) {
return function(x) {
return hexafy.myFunc(x);
};
}]);
app.controller('myCtrl', function($scope) {
$scope.counts = [255, 251, 200];
});
</script>
</body>
</html>
<!--restrict 值可以是以下几种:-->
<!--E 作为元素名使用-->
<!--A 作为属性使用-->
<!--C 作为类名使用-->
<!--M 作为注释使用-->
<!--restrict 默认值为 EA, 即可以通过元素名和属性名来调用指令。-->
<!--如果没有使用restrict，则四种方式都可以-->
<!DOCTYPE html>
<html><head>
<meta charset="utf-8">
<script src="https://cdn.bootcss.com/angular.js/1.4.6/angular.min.js"></script>
</head>
<body ng-app="myApp">
<runoob-directive></runoob-directive>
<div runoob-directive></div>
<script>
var app = angular.module("myApp", []);
app.directive("runoobDirective", function() {
return {
restrict : "A",
template : "<h1>自定义指令!</h1>"
};
});
</script>
<p><strong>注意：</strong> 通过设置 <strong>restrict</strong> 属性值为 "A" 来设置指令只能通过 HTML 元素的属性来调用。</p>
</body>
</html>
<!--a user-custom filter demo-->
<!DOCTYPE html>
<html>
<meta charset="utf-8">
<script src="https://cdn.bootcss.com/angular.js/1.4.6/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
姓名: {{ msg | reverse }}
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.msg = "Runoob";
});
app.filter('reverse', function() { //可以注入依赖
return function(text) {
return text.split("").reverse().join("");
}
});
</script>
</body>
</html><!--过滤器后跟一个冒号和一个模型名称,可过滤该模型子集-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.bootcss.com/angular.js/1.4.6/angular.min.js"></script>
</head>
<body>
<div ng-app="myApp" ng-controller="namesCtrl">
<p>输入过滤:</p>
<p><input type="text" ng-model="test"></p>
<ul>
<li ng-repeat="x in names | filter:test | orderBy:'country'">
{{ (x.name | uppercase) + ', ' + x.country }}
</li>
</ul>
</div>
<script src="http://www.runoob.com/try/demo_source/namesController.js"></script>
</body>
</html><!--ng-model 指令可以为应用数据提供状态值(invalid, dirty, touched, error):-->
<!--需要注意的是：这些状态是绑定在FormName.InputName里的，而不是在model上-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.bootcss.com/angular.js/1.4.6/angular.min.js"></script>
</head>
<body>
<form ng-app="" name="myForm" ng-init="myText = 'test@runoob.com'">
Email:
<input type="email" name="myAddress" ng-model="myText" required>
<p>编辑邮箱地址，查看状态的改变。</p>
<h1>状态</h1>
<p>Valid: {{myForm.myAddress.$valid}} (如果输入的值是合法的则为 true)。</p>
<p>Dirty: {{myForm.myAddress.$dirty}} (如果值改变则为 true)。</p>
<p>Touched: {{myForm.myAddress.$touched}} (如果通过触屏点击则为 true)。</p>
</form>
</body>
</html>
<!--提示信息会在 ng-show 属性返回 true 的情况下显示。-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://cdn.bootcss.com/angular.js/1.4.6/angular.min.js"></script>
</head>
<body>
<form ng-app="" name="myForm">
Email:
<input type="email" name="myAddress" ng-model="text">
<span ng-show="myForm.myAddress.$error.email">不是一个合法的邮箱地址</span>
</form>
<p>在输入框中输入你的邮箱地址，如果不是一个合法的邮箱地址，会弹出提示信息。</p>
</body>
</html>