Angular Ntroduction
AngularJS Introduction
AngularJS is a JavaScript framework. It tin live added to an HTML page amongst a <script> tag.
AngularJS extends HTML attributes amongst Directives, in addition to binds information to HTML amongst Expressions.
AngularJS is a JavaScript Framework
AngularJS is a JavaScript framework. It is a library written inwards JavaScript.AngularJS is distributed equally a JavaScript file, in addition to tin live added to a spider web page amongst a script tag:
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script> AngularJS Extends HTML
AngularJS extends HTML amongst ng-directives.The ng-app directive defines an AngularJS application.
The ng-model directive binds the value of HTML controls (input, select, textarea) to application data.
The ng-bind directive binds application information to the HTML view.
AngularJS Example
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/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> AngularJS starts automatically when the spider web page has loaded.
The ng-app directive tells AngularJS that the <div> chemical cistron is the "owner" of an AngularJS application.
The ng-model directive binds the value of the input acre to the application variable name.
The ng-bind directive binds the innerHTML of the <p> chemical cistron to the application variable name.
AngularJS Directives
As you lot convey already seen, AngularJS directives are HTML attributes amongst an ng prefix.The ng-init directive initializes AngularJS application variables.
AngularJS Example
<div ng-app="" ng-init="firstName='John'">
<p>The mention is <span ng-bind="firstName"></span></p>
</div> AngularJS Example
<div data-ng-app="" data-ng-init="firstName='John'">
<p>The mention is <span data-ng-bind="firstName"></span></p>
</div> You tin exercise data-ng-, instead of ng-, if you lot desire to brand your page HTML valid.
You volition acquire a lot to a greater extent than near directives afterward inwards this tutorial.AngularJS Expressions
AngularJS expressions are written within double braces: {{ aspect }}.AngularJS volition "output" information precisely where the aspect is written:
AngularJS Example
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<body>
<div ng-app="">
<p>My offset expression: {{ five + five }}</p>
</div>
</body>
</html> AngularJS Example
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
<body>
<div ng-app="">
<p>Name: <input type="text" ng-model="name"></p>
<p>{{name}}</p>
</div>
</body>
</html> AngularJS Applications
AngularJS modules define AngularJS applications.AngularJS controllers command AngularJS applications.
The ng-app directive defines the application, the ng-controller directive defines the controller.
AngularJS Example
<div ng-app="myApp" ng-controller="myCtrl">
First Name: <input type="text" ng-model="firstName"><br>
Last Name: <input type="text" ng-model="lastName"><br>
<br>
Full Name: {{firstName + " " + lastName}}
</div>
<script>
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.firstName= "John";
$scope.lastName= "Doe";
});</script> AngularJS Module
var app = angular.module('myApp', []); AngularJS Controller
app.controller('myCtrl', function($scope) {
$scope.firstName= "John";
$scope.lastName= "Doe";
}); 
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