I am doing a simple example but for some reason I am unable to print the value in message variable that I pass through $scope in my controller.
please find my code as give in this fiddle: http://jsfiddle.net/yy3vuzfk/1/
html page code:
<div ng-app>
<div>Hello AJS</div>
<div> Sum of 2 and 3 is: {{ 2 + 3}}
<div ng-controller="myController">
Message: {{ message }}
</div>
</div>
script.js code
var myController = function($scope){
$scope.message = "My Message";
};
My output html
Hello AJS
Sum of 2 and 3 is: 5
Message: {{ message }}
any help is appreciated
You first need to initalize angular by creating a module and then creating a controller in that module.
You can see this updated fiddle.
angular.module('myApp', [])
.controller("MyController", function($scope) {
$scope.message = "My Message Is Super Awesome";
});
You can find basic examples # Angularjs.org home page. Look at the "Add Some Control" section on that page.
Related
I'm walking through a tutorial on Angular. I've tried following their Dev Guide and searching SO, I'm a little confused with all the versions of Angular.
I have a small app, a to-do app, and I can't get the $scope from my HomeCtrl to appear when the app loads the home template. When I load the home template, it's showing everything except the scope calls in the curly brackets {{ }}.
Here's what I have for my HomeCtrl.js:
blocitoff.controller('HomeCtrl', ['$scope', '$firebaseArray', '$firebaseObject', function HomCtrl ($scope, $firebaseObject, $firebaseArray) {
alert("hello");
var ref = firebase.database().ref();
var list = $firebaseArray(ref);
$scope.data = $firebaseObject(ref);
$scope.hello = "no way bill it worked!";
}]);
Here's what I have for my home.html:
<body ng-controller="HomeCtrl">
<div>
<h2> hello there </h2>
<h3> {{2+5}} </h3>
I can add: {{ 1 + 2 }}.
<p> {{$scope.hello}}</p>
<p> {{ hello }} </p>
</div>
</body>
Thank you for any help or tips.
You can't use the $scope identifier in the view (the HTML). $scope is only accessible within the JavaScript.
The whole point of $scope is that expressions in the view will, by default, refer to values on the scope. So if you want to access $scope.hello, refer to it as hello, as you are already doing:
<p> {{ hello }} </p>
Working example:
var blocitoff = angular.module('blocitoff', []);
blocitoff.controller('HomeCtrl', ['$scope', function HomCtrl ($scope) {
$scope.hello = "no way bill it worked!";
}]);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="blocitoff" ng-controller="HomeCtrl">
<div>
<h2> hello there </h2>
<h3> {{2+5}} </h3>
I can add: {{ 1 + 2 }}.
<p> {{ hello }} </p>
</div>
</body>
Add the following code in html box and it will work as it should be
<div ng-app="myapp" data-ng-controller='Ctrl'>
<h1> Header </h1>
<h3> {{test}} </h3>
</div>
<script>
var app = angular.module('myapp', []);
app.controller('Ctrl', function($scope){
$scope.test = "Hello";
});
</script>
Now move the JavaScript to JavaScript box
var app = angular.module('myapp', []);
app.controller('Ctrl', function($scope){
$scope.test = "Hello";
});
It start giving error: Uncaught Error: No module: myapp
I don't want to write everything in html section, any fix?
While I was playing with setting, found the answer :)
Change the setting Load Type from "OnLoad" to "No wrap - in ", see the attached image.
Strange but it is working like charm :)
I am trying to run an angularJS example in jsfiddle (ofcourse learning purpose) getting below errors in console.
When I add this cdn for angular compatibility:
https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.6/angular.min.js
I seen below error.
VM141 angular.min.js:6 Uncaught Error: [$injector:modulerr]
http://errors.angularjs.org/1.5.6/$injector/modulerr?p0=myApp&p1=Error%3A%2…oudflare.com%2Fajax%2Flibs%2Fangular.js%2F1.5.6%2Fangular.min.js%3A21%3A19)
When I remove the external source, seen below error:
VM93:45 Uncaught ReferenceError: angular is not defined
Concern:
Do I need to add external source for angular example? If yes then what will be the correct way to add external resource. (like, search a cdn for that api and add).
Here's the code snippet:
html:
<div ng-app="myApp" ng-controller="myCtrl">
Your name: <input type="text" ng-model="name" ng-click="displayName();">
Hello {{$scope.name}}
</div>
js:
var myApp = angular.module('myApp', []);
myApp.controller('myCtrl', function($scope){
$scope.displayName = function(){
alert("In right place");
$scope.name = "Name";
}
});
Here's the fiddle: https://jsfiddle.net/supdas87/my1juu4e/2/
I've added angular-1.0.1.js file to external resources (you just have to copy and paste the URL), and changed {{$scope.name}} by {{name}} on your HTML file. You do not have to write $scope when you use {{ }}, it is implicit.
Here is a working Fiddle based on the code you provided.
PS: I've added Angular 1.0.1, but of course you can use the version of Angular you want. You can see allreleases here.
HTML
<div ng-app="myApp" ng-controller="myCtrl">
Your name: <input type="text" ng-model="name" ng-click="displayName();">
Hello {{name}}
</div>
JavaScript
var myApp = angular.module('myApp', []);
myApp.controller('myCtrl', function($scope) {
$scope.displayName = function(){
alert("In right place");
$scope.name = "Name";
}
});
I need to show link in page having attribute value mailto.
normal href attribute value working fine but if value is email than it removed
Code:
myCtrl.link = '<code>Email</code>';
<code><span ng-bind-html="myCtrl.link"></span></code>
rendered output:
<code><a target="_blank">Email</a></code>
Please suggest how to handle anchor having href value like mailto:sulok#atlogys.com
You are running into a "security" issue,
please have a look at this doc-page...
Just say "this is safe" to angular:
function TestCtrl(vm, $sce) {
'use strict';
var htmlString = '<code>Email</code>';
vm.link = $sce.trustAsHtml(htmlString);
}
angular
.module('test', [])
.controller('TestCtrl', ['$scope', '$sce', TestCtrl])
;
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<article ng-app="test">
<div ng-controller="TestCtrl">
<code><span ng-bind="link"></span></code>
</div>
</article>
I am using ng-click to call a function with arguments I get from the $scope. Unfortunately either are the arguments not processed from angular or I get this error:
Error: [$parse:syntax] Syntax Error: Token ':' not a primary expression at column 1 of the expression [:notification] starting at [:notification].
HTML snippet that results in error:
<div ng-click="goToNotif({{notification.id}})"></div>
HTML snippet not being processed from angular:
<div ng-click="goToNotif(notification.id)"></div>
IMPORTANT: notification is parsed from a repeat
<div(ng-repeat="notification in notifications")></div>
Here is the code for index.html, define "notifications" seperately -
<div ng-app="MyApp">
<div ng-controller="MainCtrl">
<div(ng-repeat="notification in notifications")>
<div ng-click="go(notification.id)"></div>
</div>
</div>
</div>
In main.js -
var app = angular.module('MyApp', []);
app.controller('MainCtrl', function($scope) {
$scope.go = function() {
//write code here.
}
});