I am trying to print scope value from 2 controllers. It is not printing the value from the second controller. What is my mistake?
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<div ng-app="myApp" ng-controller="Ctrl1">
{{carname}}
</div>
<div ng-app="myApp" ng-controller="Ctrl2">
{{carname}}
</div>
<script>
var app = angular.module('myApp', []);
app.controller('Ctrl1', function($scope) {
$scope.carname = "Honda";
});
app.controller('Ctrl2', function($scope) {
$scope.carname = "Toyota";
});
</script>
You defined two ng-app, angular will bootstrap the first app it finds on the page and not the second one. Therefore second one doesn't work.
Define app on the element covering all the controller elements.
Example Snippet:
var app = angular.module('myApp', []);
app.controller('Ctrl1', function($scope) {
$scope.carname = "Honda";
});
app.controller('Ctrl2', function($scope) {
$scope.carname = "Toyota";
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<div ng-app="myApp">
<div ng-controller="Ctrl1">
{{carname}}
</div>
<div ng-controller="Ctrl2">
{{carname}}
</div>
</div>
You don't need ng-app for each div, change your html like this:
<body ng-app="myApp">
<div ng-controller="Ctrl1">
{{carname}}
</div>
<div ng-controller="Ctrl2">
{{carname}}
</div>
</body>
Because you defined your app twice. Try to use this code:
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<div ng-app="myApp">
<div ng-controller="Ctrl1">
{{carname}}
</div>
<div ng-controller="Ctrl2">
{{carname}}
</div>
</div>
<script>
var app = angular.module('myApp', []);
app.controller('Ctrl1', function($scope) {
$scope.carname = "Honda";
});
app.controller('Ctrl2', function($scope) {
$scope.carname = "Toyota";
});
</script>
Two ng-app on single page doesn't work, it will compile only the 1st instance of ng-app and the other will get ignored.
It seems like you wanted to use two controllers on the same page. What you can do is you can move ng-app directive on body level & have ng-controller on two different divs.
<body ng-app="myApp">
<div ng-controller="Ctrl1">
{{carname}}
</div>
<div ng-controller="Ctrl2">
{{carname}}
</div>
</body>
Related
I'm fairly new to Angular and I am trying to use ng-model and ng-controller to change some text using an input box.
This issue is that my initial text(john) doesn't show up on the page. Every tutorial says this is the way to do it. Am I missing some import or declaration somewhere in the component.ts?
Here is my code.
var app = angular.module('myApp', [])
app.controller('myCtrl', function($scope){
$scope.firstName = "john";
});
<div ng-app="myApp" ng-controller="myCtrl">
<h1>{{firstName}}</h1>
Name: <input ng-model="firstName">
</div>
You forgot to inject $scope into your controller.
myApp.controller('myCtrl', ['$scope', function($scope) {
$scope.firstName = 'john';
}]);
Any dependency (services, filters..) you want to have in the controller you must inject.
Add the angular.js library as a <script> element:
var app = angular.module('myApp', [])
app.controller('myCtrl', function($scope){
$scope.firstName = "john";
});
<script src="//unpkg.com/angular/angular.js"></script>
<div ng-app="myApp" ng-controller="myCtrl">
<h1>{{firstName}}</h1>
Name: <input ng-model="firstName">
</div>
You didn't miss any declaration, but the problem might be because you did not include angular and your code inside html.
Try this:
<html>
<head></head>
<body ng-app="myApp">
<div ng-controller="myCtrl">
<h1>{{firstName}}</h1>
Name: <input ng-model="firstName">
</div>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.7.9/angular.min.js"></script>
<script src="./component.ts"></script> <!--your component file location-->
</body>
</html>
I don't see where you're including angular though. Add it into your code.
Example:
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<h1>{{firstName}}</h1>
Name: <input ng-model="firstName">
</div>
<script>
var app = angular.module('myApp', [])
app.controller('myCtrl', function($scope){
$scope.firstName = "johns";
});
</script>
</body>
</html>
I have a situation somewhat like this below code. I have a delete button on view cart page when it is pressed an API is called to delete the product and I just hide the product div tag to avoid page reload initially. How to hide multiple products one by one
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.hide = function(){
//WHAT SHOULD GO HERE
}
});
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl" >
<h5 ng-click="hide()" ng-repeat="x in [0,1,2,3,4,5,6]">{{x}}<!-- HOW TO USE ng-hide HERE --></h5>
</div>
</body>
</html>
You can have following in your HTML:
<h5 ng-hide="hide{{$index}}" ng-click="hide($index)"
ng-repeat="x in [0,1,2,3,4,5,6]">{{x}}</h5>
Now, your hide() function would look like this,
$scope.hide = function(index){
$scope['hide'+index] = true
}
That should hide numbers on click.
Here's working example!
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.hide = function(index){
$scope['hide'+index] = true
}
});
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl" >
<h5 ng-hide="hide{{$index}}" ng-click="hide($index)" ng-repeat="x in [0,1,2,3,4,5,6]">{{x}}<!-- HOW TO USE ng-hide HERE --></h5>
</div>
</body>
</html>
if you want to hide the product div tag to avoid page reload initially
just get type button without type="submit" ( inside <form></form> )
<button type="submit" > to >>> <button ng-click="hide()">
Update your COntroller like that :
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.list=[0,1,2,3,4,5,6]
$scope.hide = function(x){
//WHAT SHOULD GO HERE
$scope.list.splice(x, 1);
}
});
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl" >
<h5 ng-click="hide($index)" ng-repeat="x in list">{{x}}</h5>
</div>
</body>
</html>
ng-hide is just css(display:none) way hide element. ng-if is add/remove DOM element. (we can see if u hide element, ng-if we can't see).
You try remove. Just see the example.
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.data = [0,1,2,3,4,5,6];
$scope.hide = function(index){
// in api call success function
$scope.data.splice(index, 1);
}
});
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl" >
<h5 ng-click="hide($index)" ng-repeat="x in data">{{x}}<!-- HOW TO USE ng-hide HERE --></h5>
</div>
</body>
</html>
I am working with angular JS and JSP. i need to retrieve the session attribute variable from the JSP to my controller. My code is below
JSP
<html lang="en" ng-app="myApp">
<body>
<div data-ng-controller="myCtrl as vm" style="height:100%">
<md-content layout="row" style="height:100%">
<div class="widget">
<h2>Header</h2>
<div ui-view></div>
</div>
</md-content>
</div>
<script type="text/javascript" src="/root/script/script.js"></script>
<%
String policy = session.getAttribute("POLICY_CHANGE");
%>
</body>
</html>
JS
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
// i want to get the JSP variable here
});
Set session value to hidden input.
<div data-ng-controller="myCtrl as vm">
<input type="hidden" id="sessionData" />
</div>
<script>
var data = '<%=request.getSession().getAttribute("POLICY_CHANGE")%>';
document.getElementById("sessionData").value = data;
</script>
and get value
app.controller('myCtrl', function($scope, $document) {
$scope.data = $document[0].getElementById("sessionData").value;
console.log($scope.data);
});
You can output the variable using expression language as a data attribute, like this:
<div data-my-variable="${myVariable}" id="myDiv"></div>
And if you are using Jquery, you can use the attr function:
var output = $("#myDiv").attr("data-my-variable");
Try (I've never tried this - just and idea... please post if it is working):
<script>
angular.module('jspVariablesService', [])
.value("valueName",${yourVariable});
</script>
in <head></head> or at the beginning of body and then import jspVariableService in
var app = angular.module('myApp', ["jspVariableService"]);
and use it in controller:
app.controller('myCtrl', ["$scope", "valueName" function($scope,valueName) {
//use your value!
});
I am new in angularjs and going through Egghead.io videos..but i could not link js page into html page.
index.html
<!DOCTYPE html>
<html>
<head>
<title>Angular</title>
</head>
<body>
<div ng-app="">
<div ng-controller="FirstCtrl">
<h4>{{ "data.message"}}</h4>
<div class="{{data.message}}">
Wrap me up in component
</div>
</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.0/angular.min.js"></script>
<script type="text/javascript" src="main.js"></script>
</body>
</html>
and my main.js file is
function FirstCtrl($scope) {
$scope.data = {message: "panel"};
}
You need to define your app as var VARIABLE_NAME=angular.module('APP_NAME') and your controller as VARIABLE_NAME.controller('CONTROLLER_NAME', FUNCTION_EXPRESSION)
var myApp = angular.module('myApp', []);
myApp.controller('FirstCtrl', FirstCtrl);
function FirstCtrl($scope) {
$scope.data = {
message: "panel"
};
}
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myApp">
<div ng-controller="FirstCtrl">
<h4>{{data.message}}</h4>
<div class="{{data.message}}">
Wrap me up in component
</div>
</div>
</div>
Note: You should not have quotes("") in your expressions or else, it will be treated at string.
Move these links inside tag
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.0/angular.min.js"> </script>
<script type="text/javascript" src="main.js"></script>
and you cannot use $scope with module and controller this must be
var app = angular.module('myApp', []);
app.controller('FirstCtrl', function($scope) {
$scope.data = {"message": panel};
});
and in html
<div ng-app="myApp">
to first div
and use
{{data.message}}
Sorry about the noob question, I'm new to AngularJS.
I have a Service and 2 Controllers , one for my home page and the second for the page that I want to create dynamically.
I want to set an object from my first controller(home page) in my service, and get this object in my second controller(on a new html page that I'll call with form action) and display some attributes of this object.
How can I do that?
Thanks!
EDIT
Sample of what I need :
index.html
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="app.js"></script>
<body ng-app="app">
<div ng-controller="firstCtrl">
First Controller
<button ng-click="add()">add</button>
{{data.value}}
<hr/>
Aqui!
</div>
</body>
</html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="app">
<div ng-controller="secondCtrl">
Second Controller
<button ng-click="add()">add</button>
{{data.value}}
<hr/>
</div>
</body>
</html>
http://plnkr.co/edit/sSBnE7gllFc0F6197cUD?p=info
In that case you can use ngStorage https://github.com/gsklee/ngStorage because data in service will be destroyed after full page reload.
please see demo here http://plnkr.co/edit/8b04wZ6btGwLodRuJr7V?p=preview
JS:
var app = angular.module('app', ['ngStorage']);
app.controller('firstCtrl', function($scope, $localStorage) {
$scope.storage = $localStorage.$default({myValue: 0 });
});
app.controller('secondCtrl', function($scope, $localStorage) {
$scope.storage = $localStorage;
});
HTML1
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="https://rawgithub.com/gsklee/ngStorage/master/ngStorage.js"></script>
<script src="app.js"></script>
<body ng-app="app">
<div ng-controller="firstCtrl">
First Controller
<button ng-click="storage.myValue = storage.myValue + 1">{{storage.myValue}}</button>
{{service.data.value}}
<hr/>
Aqui!
</div>
</body>
</html>
HTML2
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="https://rawgithub.com/gsklee/ngStorage/master/ngStorage.js"></script>
<script src="app.js"></script>
<body ng-app="app">
<div ng-controller="secondCtrl">
Second Controller myValue is: {{storage.myValue}}
</div>
Page 1
</body>
</html>
var app = angular.module('app', []);
app.service('dataService', function(){
var _data = {value:0};
return {
data : _data
};
});
app.controller('firstCtrl', function($scope,dataService){
$scope.data = dataService.data;
$scope.add = function(){
$scope.data.value ++;
};
});
app.controller('secondCtrl', function($scope,dataService){
$scope.data = dataService.data;
$scope.add = function(){
$scope.data.value ++;
};
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<body ng-app="app">
<div ng-controller="firstCtrl">
First Controller
<button ng-click="add()">add</button>
{{data.value}}
<hr/>
</div>
<div ng-controller="secondCtrl">
Second Controller
<button ng-click="add()">add</button>
{{data.value}}
<hr/>
</div>
</body>
Inject the service into your first controller, set an object on it. Inject the same service into the second controller and viola - the object is there!