Hello I'm started to learn AngrularJS from strach and I have problem with basic two modules and basic filter:
<body ng-app="myapp">
<div ng-controller="MyController" >
{{1+1}}
<div>Filtered: {{myData.text | myFilter:2:5}}</div>
</div>
<script>
angular.module("myapp", [])
.controller("MyController", function($scope) {
$scope.myData = {};
$scope.myData.text = "balsalaskdlas";
});
angular.module("myapp", []).filter('myFilter', function() {
return function(stringValue, startIndex, endIndex) {
return stringValue.substring(parseInt(startIndex), parseInt(endIndex));
};
});
</script>
</body>
But this code gives me error : "Argument 'MyController' is not a function, got undefined"
And in HTML browser as page I saw:
{{1+1}}
Filtered: {{myData.text | myFilter:2:5}}
What is wrong with these code?
angular.module("myapp", [])
The above line defines a new module, named "myapp", and overwrite the previously defined module. If you want to get a reference to the module and add a filter to it, use
angular.module("myapp").filter(...)
You're declaring the module twice and you are missing an ending in the ng-controller-div
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>document.write('<base href="' + document.location + '" />');</script>
<link rel="stylesheet" href="style.css" />
<script data-require="angular.js#1.2.x" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.17/angular.min.js" data-semver="1.2.17"></script>
</head>
<body ng-app="myapp">
<div ng-controller="MyController" >
{{1+1}}
<div>Filtered: {{myData.text | myFilter:2:5}}</div>
</div>
<script>
var app = angular.module("myapp", []);
app.controller("MyController", function($scope) {
$scope.myData = {};
$scope.myData.text = "balsalaskdlas";
});
app.filter('myFilter', function() {
return function(stringValue, startIndex, endIndex) {
return stringValue.substring(parseInt(startIndex), parseInt(endIndex));
};
});
</script>
</body>
</html>
Related
Attempting to learn angularjs because I need to modify some stuff at work and that is what they are using and I can't upgrade to Angular2+ at the moment. I have the following code where I'm trying to use the $http.get method but getting $http not defined error in the console.
// js code
var app = angular.module('app', []);
app.controller('HelloWorldCtrl', function($scope){
var onUserComplete = function(response){
$scope.user = response.data;
};
$http.get("https://api.github.com/users/robconery")
.then(onUserComplete);
$scope.message = "Hello, AngularJS";
});
// 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="HelloWorldCtrl">
<h1>{{message}}</h1>
<div>
Name: {{user.name}}
</div>
<div>
Location: {{user.location}}
</div>
</body>
</html>
You need to pass $http as a dependency to your controller,
app.controller('HelloWorldCtrl', function($scope,$http){
});
DEMO
var app = angular.module('app', []);
app.controller('HelloWorldCtrl', function($scope,$http){
var onUserComplete = function(response){
$scope.user = response.data;
};
$http.get("https://api.github.com/users/robconery")
.then(onUserComplete);
$scope.message = "Hello, AngularJS";
});
<!DOCTYPE html>
<html ng-app="app">
<head>
<script data-require="angular.js#*" data-semver="4.0.0" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.10/angular.min.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body ng-controller="HelloWorldCtrl">
<h1>{{message}}</h1>
<div>
Name: {{user.name}}
</div>
<div>
Location: {{user.location}}
</div>
</body>
</html>
In the following code taken from my app, the dropdown is not getting updated with the scope data. How can I make this work? I need to pass the dropdown options from parent controller to child controller. I am getting [$injector:modulerr] error.
<div ng-app="myApp" ng-controller="parentCtrl as pt">
<button ng-click="pt.callChild()">Change Dropdown</button>
<div ng-controller="childCtrl as ct">
<select ng-model="ct.selectedName" ng-options="item for item in ct.names">
</select>
</div>
</div>
JS:
var app = angular.module('myApp', []);
app.controller('parentCtrl', function ($scope) {
var vm = this;
var newArray = ["Steve", "Jony"];
vm.callChild = function () {
$scope.$broadcast('someEvent', newArray);
};
});
app.controller('childCtrl', function ($scope) {
var vm = this;
vm.names = ["Emil", "Tobias", "Linus"];
$scope.$on('someEvent', function (e, newArray) {
vm.names = newArray;
});
});
Here is the fiddle.
The code is working fine for me and I have incorporated angular 1.5 version.
See plnkr here .
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>
document.write('<base href="' + document.location + '" />');
</script>
<link rel="stylesheet" href="style.css" />
<script data-require="angular.js#1.5.x" src="https://code.angularjs.org/1.5.8/angular.js" data-semver="1.5.8"></script>
<script src="app.js"></script>
</head>
<div ng-app="myApp" ng-controller="parentCtrl as pt">
<button ng-click="pt.callChild()">Change Dropdown</button>
<div ng-controller="childCtrl as ct">
<select ng-model="ct.selectedName" ng-options="item for item in ct.names">
</select>
</div>
</div>
</html>
Is it possible to insert directives from within custom filters?
For example given the following HTML:
<!DOCTYPE html>
<html ng-app="plunker">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>document.write('<base href="' + document.location + '" />');</script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.6/css/bootstrap.min.css" />
<link rel="stylesheet" href="style.css" />
<script data-require="angular.js#1.3.x" src="https://code.angularjs.org/1.3.20/angular.js" data-semver="1.3.20"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular-ui-bootstrap/1.0.3/ui-bootstrap-tpls.min.js"></script>
<script src="app.js"></script>
</head>
<body ng-controller="MainCtrl">
<p>Hello <span ng-bind-html="name | test"></span>!</p>
</body>
</html>
And javascript:
var app = angular.module('plunker', ['ui.bootstrap']);
app.filter('test', ['$sce', function($sce){
return function(val) {
var out = '<b>' + val + '</b>';
out += '<uib-progressbar value="55">55</uib-progressbar>';
return $sce.trustAsHtml(out);
}
}]);
app.controller('MainCtrl', function($scope) {
$scope.name = 'World';
});
How do I get the "uib-progressbar" to display properly as a progress bar?
From what I've read I'll need to manually $compile the directive and then append the resulting element to the page but to do that the rest of the html (generated in the filter) will need to be rendered first, so it's kind of impossible from what I can see?
I've set up a plunker here: https://plnkr.co/edit/V5SmmQXPdrfKeVEbNwaV?p=preview
Filetrs are not for this, write directive instead, like:
app.directive('test', function() {
return {
restrict : 'E',
template : function(elem, attrs) {
var out = '<b>' + attrs.val + '</b>';
out += '<uib-progressbar value="55">55</uib-progressbar>';
return out;
}
}
});
https://plnkr.co/edit/oQ0AekzCBjd9eiNqhL6c?p=preview
I am a newbie to the AngularJS World. I have this example to define a controller for AngularJS page. I ended up displaying the raw text in the browser when tried to open the page.
I am trying with downloading the angular.js (lib/angular.js) to local filesystem.
The page is as given below:
<!doctype html>
<html ng-app>
<head>
<script src="lib/angular.js"></script>
<script type="text/javascript">
function MyController($scope) {
$scope.clock = new Date();
var updateClock = function() {
$scope.clock = new Date();
};
setInterval(function() {
$scope.$apply(updateClock);
}, 1000);
updateClock();
};
</script>
</head>
<body>
<div ng-controller="MyController">
<h1>Hello {{clock}}!</h1>
</div>
</body>
</html>
I ended up getting the result as below:
Hello {{clock}}!
In the browser console, I am getting the error log as follows:
Error: [ng:areq] Argument 'MyController' is not a function, got undefined
What am I missing?
Best Regards,
Chandra.
You need to initiate an angular module and create a controller using the same.
For Example:
var app = angular.module('myApp', []);
app.controller('MyController', function($scope) {
$scope.clock = new Date();
var updateClock = function() {
$scope.clock = new Date();
};
setInterval(function() {
$scope.$apply(updateClock);
}, 1000);
updateClock();
});
And then you need to specify the app in the html markup with ng-app="myApp"
So your html will be:
<!DOCTYPE html>
<html ng-app="myApp">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>document.write('<base href="' + document.location + '" />');</script>
<link rel="stylesheet" href="style.css" />
<script data-require="angular.js#1.3.x" src="https://code.angularjs.org/1.3.13/angular.js" data-semver="1.3.13"></script>
<script src="app.js"></script>
</head>
<body>
<div ng-controller="MyController">
<h1>Hello {{clock}}!</h1>
</div>
</body>
</html>
Working Plunkr
On my site I have the following structure
Header_controller:
myApp.controller('Header_controller',function($scope,$rootScope,$location,Genral_model){
$scope.logout = function(){
var data = {};
$rootScope.$emit('logout_clicked', data); // NOT WORKING
$rootScope.$broadcast('logout_clicked', data); // NOT WORKING
}
});
Users_controller:
myApp.controller('Users_controller', function ($scope,$rootScope,Users_model,$location,$state) {
$rootScope.$on('logout_clicked', function(event, resp) {
Users_model.unRegisterCookies();
});
})
Users_model:
myApp.factory('Users_model', function($rootScope,$http,$cookies) {
var factory={};
factory.unRegisterCookies = function(){
alert('log out');
}
return factory;
});
I'm trying to invoke unRegisterCookies function by sending broadcast from Header_controller to Users_controller, but it's doesn't work with emit and not with broadcast.
How to make it work?
This is the same basic code you're trying and it's working for me. Maybe there's an error somewhere else in your code?
http://plnkr.co/edit/SADWwkZWztoVJVjv0tKt
html:
<!DOCTYPE html>
<html ng-app="plunker">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>document.write('<base href="' + document.location + '" />');</script>
<link rel="stylesheet" href="style.css" />
<script data-require="angular.js#1.0.x" src="https://code.angularjs.org/1.2.28/angular.js" data-semver="1.2.28"></script>
<script src="app.js"></script>
</head>
<body>
<div ng-controller="HeaderCtrl">
<p>Button has been hit {{counter}} times.</p>
</div>
<div ng-controller="UsersCtrl">
<button ng-click="pushme()">Count Me In</button>
</div>
</body>
</html>
script:
var app = angular.module('plunker', []);
app.controller('HeaderCtrl', function($scope, $rootScope) {
$scope.counter = 0;
$rootScope.$on('countMeIn', function (event, data) {
$scope.counter = $scope.counter + 1;
});
});
app.controller('UsersCtrl', function($scope, $rootScope) {
$scope.pushme = function() {
$rootScope.$emit("countMeIn", {});
};
});
See this plnkr for working version of your code:
http://plnkr.co/edit/JN5yWBUjmjBh5m7FiQww
This is pretty identical to the code you posted and it's working. You might have some other error in your page. If you are in Chrome or FireFox, pull up the console and see what errors are being shown for your page.
html:
<!DOCTYPE html>
<html ng-app="myApp">
<head>
<meta charset="utf-8" />
<title>AngularJS Plunker</title>
<script>document.write('<base href="' + document.location + '" />');</script>
<link rel="stylesheet" href="style.css" />
<script data-require="angular.js#1.0.x" src="https://code.angularjs.org/1.2.28/angular.js" data-semver="1.2.28"></script>
<script data-require="angular.js#1.0.x" src="https://code.angularjs.org/1.2.28/angular-cookies.js" data-semver="1.2.28"></script>
<script src="app.js"></script>
</head>
<body>
<div ng-controller="HeaderCtrl">
<h1>Headers Controller</h1>
<button ng-click="logout()">Log out</button>
</div>
<div ng-controller="UsersCtrl">
<h1>Users Controller</h1>
</div>
</body>
</html>
script:
var myApp = angular.module('myApp', ['ngCookies']);
myApp.controller('HeaderCtrl', function($scope, $rootScope) {
$scope.logout = function(){
var data = {};
$rootScope.$emit('logout_clicked', data); // NOT WORKING
$rootScope.$broadcast('logout_clicked', data); // NOT WORKING
}
});
myApp.controller('UsersCtrl', function($scope, $rootScope, Users_model) {
$rootScope.$on('logout_clicked', function(event, resp) {
Users_model.unRegisterCookies();
});
});
myApp.factory('Users_model', function($rootScope,$http,$cookies) {
var factory={};
factory.unRegisterCookies = function(){
alert('log out');
}
return factory;
});