I have a problem with boostrapping an angularjs app - with initialization code in the controller. The simplified test-case is like this (index.js):
var myApp = angular.module( 'myApp', []);
myApp.controller( 'myAppController', [ '$scope', function($scope) {
console.log('never shown');
$scope.test = 'constructor called';
// removed more init code
}]);
$(document).ready(function(){
angular.bootstrap( document, ['myApp']);
console.log('Finished boostrapping.');
});
The HTML file for this test-case:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>TeST</title>
</head>
<body>
{{test}}
<script type="text/javascript" src="js/bower_components/jquery/dist/jquery.min.js"></script>
<script type="text/javascript" src="js/bower_components/angular/angular.js"></script>
<script type="text/javascript" src="js/index.js"></script>
</body>
</html>
The result is that console output only says "Finished bootstrapping" - and the controller function is never invoked. .. This baffles me a little, but this is my first angular 1.2 app. I get the same result If I put ng-app="myApp" in the tag and let angular bootstrap the app automatically. ...
you never set ng-controller anywhere in your markup.
also, you should either put your script tags in the head, or after </body>.
edit: when using bootstrap this way, the placement of the <script> tags goes matter.
The first parameter to the angular.bootstrap method is an element. Currently you are passing in document, which is not an element.
Try
angular.bootstrap(document.documentElement, ['myApp']);
or
angular.bootstrap(document.body, ['myApp']);
Related
Newbie to AngularJS. Trying to display a message from controller onto the html page but it does not show. I'm using AngularJS version 1.6.0 and I binded the controller to the body tag. What am I missing?
/// HTML
<!DOCTYPE html>
<html ng-app="app">
<head>
<script data-require="angular.js#*" data-semver="4.0.0"
src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.10/angular.min.js">
</script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body ng-controller="MainController">
<h1>{{message}}</h1>
</body>
</html>
// script.js file contents
var app = angular.module('app', []);
app.MainController('MainController', function($scope) {
$scope.message = "Hello, Angular!";
});
Thank you.
Since you are using the version 1.6 , declaration of global controller is not supported, you need to have a module as well.
DEMO
var app = angular.module('testApp',[])
app.controller('MainController',function($scope) {
$scope.message = "Hello, Angular!";
});
<!DOCTYPE html>
<html ng-app="testApp">
<head>
<script data-require="angular.js#*" data-semver="4.0.0"
src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.10/angular.min.js">
</script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body ng-controller="MainController">
<h1>{{message}}</h1>
</body>
</html>
do you need to pass the name of your app on the ng-app tag.
Like this:
<html ng-app="your-app">
So Angular understand where it comes.
So, an advice to you is using the controllerAs syntax over the classic controller with $scope syntax.
Like this:
JS file:
var app = angular.module('testApp',[])
app.controller('MainController',function($scope) {
var vm = this; // view model
vm.message = "Hello, Angular!";
});
HTML file:
<body ng-controller="MainController as mainCtrl">
<!-- or any other name, your choice -->
<h1>{{mainCtrl.message}}</h1>
</body>
Why?: Controllers are constructed, "newed" up, and provide a single
new instance, and the controllerAs syntax is closer to that of a
JavaScript constructor than the classic $scope syntax.
Why?: It promotes the use of binding to a "dotted" object in the View
(e.g. customer.name instead of name), which is more contextual, easier
to read, and avoids any reference issues that may occur without
"dotting".
Why?: Helps avoid using $parent calls in Views with nested controllers
https://github.com/johnpapa/angular-styleguide/tree/master/a1#controlleras-view-syntax
I hope this helps you
I downloaded the seed project from git. Basically, changed the code in following three files -
app.js
angular.module('app', []);
index.html
<!DOCTYPE html>
<html ng-app="app">
<head lang="en">
<meta charset="UTF-8">
<title>AngularJS Tutorial</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.4/angular.min.js"></script>
</head>
<body ng-controller="MessageController">
<div class="container">
<h1>{{title}}</h1>
</div>
</body>
</html>
MessageController.js
angular.module('app').controller("MessageController",function(){
alert("inside message controller");
var vm = this;
vm.title = 'AngularJS Tutorial Example';
});
When I run http://localhost:8000/app/index.html, it displays {{title}} and not the value inside controller.
I am new bie in angular and trying to learn but unable to figure out whats wrong here.
You appear to have two different things happening.
First you appear to have missed adding your javascript dependencies to your html file.
<head lang="en">
<meta charset="UTF-8">
<title>AngularJS Tutorial</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.4/angular.min.js"></script>
<script src="app.js"></script>
<script src="MessageController.js"></script>
</head>
An additional note
Because you are using multiple files (which is fine), make sure you include the app.js file before the MyController.js file.
You also need to correctly access the scope. Even if you add the javascript dependencies you will get a blank page if not bound correctly.
Because you are using var vm = this; format you need to be sure to use the control as annotation
<body ng-controller="MessageController as myctrl">
<div class="container">
<h1>{{myctrl.title}}</h1>
</div>
</body>
Working Plunker Example
Another options is to directly extend $scope in your controller. You could then just have {{title}} on your page and it should bind correctly.
angular.module('app').controller("MessageController",['$scope',function($scope){
alert("inside message controller");
$scope.title = 'AngularJS Tutorial Example';
}]);
var yourapp = angular.module('app', []);
yourapp .controller('MessageController', function ($scope) {
alert("inside message controller");
$scope.title = 'AngularJS Tutorial Example';
});
I am trying to learn angular, and I am stuck in first chapter :-(
I am using angular 2.0, but when i try to create a module I get error "angular is not defined".
My plunker: Plunker:
my script:
(function() {
console.log("Hello");
var app = angular.Module("gitHubViewer", []);
app.controller("MainController", MainController);
var MainController = function($scope) {
$scope.message = "Hello World!";
};
}());
HTML:
<html ng-app="gitHubViewer">
<head>
<script src="https://code.angularjs.org/2.0.0-alpha.20/angular.js" data-semver="2.0.0-alpha.20" data-require="angular.js#*"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body ng-controller="MainController">
<h1>{{message}}</h1>
</body>
</html>
Can some body please help, is this a wrong way of creating module?
Thanks
Please check https://code.angularjs.org/2.0.0-alpha.20/angular.js link.
Display 404 Not Found.
Please download angularJS From https://angularjs.org/ and add it in your project.
I've not looked into Angular 2 very much but your code looks more like Angular 1 to me.
Angular 2 apps are bootstrapped in a very different way using ES6 components (specifically System). It should look more like this:
<html>
<head>
<title>Angular 2 Hello World!</title>
<script src="/dist/es6-shim.js"></script>
</head>
<body>
<my-app></my-app>
<script>
// Rewrite the paths to load the files
System.paths = {
'angular2/*': '/angular2/*.js', // Angular
'rtts_assert/*': '/rtts_assert/*.js', // Runtime assertions
'app': 'app.es6' // The my-app component
};
// Kick off the application
System.import('app');
</script>
</body>
</html>
This code was taken from this excellent tutorial: Getting Started with Angular 2.0.
So, I'm working on an Angular application and I have been having problems regarding compatibility between ngSanitize and ngDragDrop. ngDragDrop can be found at http://ganarajpr.github.io/angular-dragdrop/ and ngSanitize at https://docs.angularjs.org/api/ngSanitize/service/$sanitize.
The very moment I include ngSanitize on my app module, the angular code stops working entirely.
I have a test file called compatibility.html
<!DOCTYPE html>
<html ng-app="MyApp">
<head>
<meta charset='utf-8'>
<script src="compatibility.js"></script>
<script src="angular/angular.min.js"></script>
<script src="angular-resource/angular-resource.min.js"></script>
<script src="angular/angular-sanitize.min.js"></script>
<script src="angular/draganddrop.js"></script>
</head>
<body>
{{3+1}}
</body>
</html>
And another called compatibility.js
var app = angular.module("MyApp", ["ngDragDrop","ngSanitize"]);
app.controller("Controller", [ '$scope', '$sce', function($scope, $sce) {
}]);
I haven't the foggiest idea why it isn't working and I'm not sure what to do. Supposedly, evaluating {{3+1}} should return a 4 when the code is run, but it doesn't. I've worked with both ngSanitize and ngDragDrop separately, and the problem only shows when I try to use both simultaneously.
Try moving your compatibility.js file down to be under the angular.min.js.
Or just put it at the bottom like this:
<script src="angular/angular.min.js"></script>
<script src="angular-resource/angular-resource.min.js"></script>
<script src="angular/angular-sanitize.min.js"></script>
<script src="angular/draganddrop.js"></script>
<script src="compatibility.js"></script>
PS. I don't think there is any compatibility problems.
I'm trying to run a simple hello world example and can't get it to work. What am I doing wrong here? I keep getting 'Uncaught Error: No module: myapp' error in the chrome console.
<!DOCTYPE html>
<html ng-app='myapp'>
<head>
<title>Angular App</title>
</head>
<body>
<div ng-controller="TextController">
<h1>Angular App says {{greeting.message}}</h1>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.4/angular.min.js"/>
<script type="text/javascript">
var myModule = angular.module('myapp',[]);
myModule.controller("TextController", function($scope){
$scope.greeting.message = "hello world!";
});
</script>
</body>
</html>
Here's the JSFiddle link: http://jsfiddle.net/HdR2c/1/
You can't self close script tags first of all so you need to change your angular include to be the following:
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.4/angular.min.js">
</script>
Then change your $scope.greeting.message var to something like $scope.greetingMessage. The way you are currently doing it you are looking for an attribute called "message" in a greeting object.
You can't self-close script tag. This is wrong:
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.4/angular.min.js"/>
You should close it this way:
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.4/angular.min.js"></script>
Make sure your module definition have the argument [] blocks in it, even though they are empty.
angular.module('module_name',[]);