Einführung in AngularJS
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AngularJS 是一个 JavaScript 框架。它可以使用一个<script>标签添加到 HTML 页面中。
AngularJS 通过指令扩展了 HTML 属性，并使用表达式将数据绑定到 HTML。
AngularJS 是一个 JavaScript 框架
AngularJS 是用 JavaScript 编写的 JavaScript 框架。
AngularJS 以 JavaScript 文件的形式分发，并且可以使用 script 标签添加到网页中：
<script src="https://cdn.staticfile.net/angular.js/1.6.9/angular.min.js"></script>
AngularJS 扩展了 HTML
AngularJS 使用 ng-指令扩展了 HTML。
ng-app 指令定义了一个 AngularJS 应用程序。
ng-model 指令将 HTML 控件（input, select, textarea）的值绑定到应用程序数据。
ng-bind 指令将应用程序数据绑定到 HTML 视图。
AngularJS-Beispiel
<!DOCTYPE html> <html> <script src="https://cdn.staticfile.net/angular.js/1.6.9/angular.min.js"></script> <body> <div ng-app=""> <p>Name: <input type="text" ng-model="name"></p> <p ng-bind="name"></p> </div> </body> </html>
示例解释：
当网页加载完成后，AngularJS 会自动启动。
ng-app 指令告诉 AngularJS，<div> 元素是 AngularJS 应用程序的“所有者”。
ng-model 指令将输入字段的值绑定到应用程序变量 name.
ng-bind Instructions bind the content of the <p> element to the application variable name.
AngularJS-Instruktionen
As you can see, AngularJS instructions are with ng prefix HTML attributes.
ng-init Instructions initialize AngularJS application variables.
AngularJS-Beispiel
<div ng-app="" ng-init="firstName='Bill'"> <p>Name is <span ng-bind="firstName"></span></p> </div>
or use valid HTML:
AngularJS-Beispiel
<div data-ng-app="" data-ng-init="firstName='Bill'"> <p>Name is <span data-ng-bind="firstName"></span></p> </div>
If you want the HTML page to be valid, you can use data-ng- instead of ng-.
You will learn more about instructions later in this tutorial.
AngularJS- Ausdrücke
AngularJS expressions are written within double curly braces:{{ expression }}.
AngularJS will "output" data at the location of the expression:
AngularJS-Beispiel
<!DOCTYPE html>
<html>
<script src="https://cdn.staticfile.net/angular.js/1.6.9/angular.min.js"></script>
<body>
<div ng-app="">
<p>My first expression: {{ 5 + 5 }}</p>
</div>
</body>
</html>
AngularJS expressions bind AngularJS data to HTML, with ng-bind The way of instructions is the same.
AngularJS-Beispiel
<!DOCTYPE html>
<html>
<script src="https://cdn.staticfile.net/angular.js/1.6.9/angular.min.js"></script>
<body>
<div ng-app="">
<p>Name: <input type="text" ng-model="name"></p>
<p>{{name}}</p>
</div>
</body>
</html>
You will learn more about expressions later in this tutorial.
AngularJS-Anwendung
AngularJS ModuleDefine the AngularJS application.
AngularJS ControllerControl the AngularJS application.
ng-app Definition of the application by instructions,ng-controller Definition of controller instructions.
AngularJS-Beispiel
<div ng-app="myApp" ng-controller="myCtrl">
Name: <input type="text" ng-model="firstName"><br>
Nachname：<input type="text" ng-model="lastName"><br>
<br>
Vollständiger Name：{{firstName + " " + lastName}}
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.firstName= "Bill";
$scope.lastName= "Gates";
});
</script>
AngularJS-Module definieren die Anwendung:
AngularJS-Module
var app = angular.module('myApp', []);
AngularJS-Kontroller steuern die Anwendung:
AngularJS-Kontroller
app.controller('myCtrl', function($scope) {
$scope.firstName= "Bill";
$scope.lastName= "Gates";
});
Sie werden im folgenden Tutorial mehr über Module und Kontroller erfahren.
- Vorherige Seite AngularJS-Tutorial
- Nächste Seite AngularJS- Ausdrücke
