I am trying to trigger an event from an Ember.js controller. I throws an error saying "ember.min.js:3 Uncaught Error: Nothing handled the action 'clicked'. If you did handle the action, this error can be caused by returning true from an action handler in a controller, causing the action to bubble.". Also I am not clear on how the event system works on itself for the targeted action. C an someone help me with this. Here is my code:
<!DOCTYPE html>
<html>
<head>
<title>Ember.js Application example</title>
<!-- CDN's -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.12.0/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/handlebars.js/3.0.1/handlebars.min.js"></script>
<script src="https://code.jquery.com/jquery-2.1.3.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.10.0/ember.min.js"></script>
<script src="http://builds.emberjs.com/tags/v1.10.0-beta.3/ember-template-compiler.js"></script>
<script src="http://builds.emberjs.com/release/ember.debug.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.3/ember.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container" id="github-app">
</div>
<script type="text/x-handlebars" data-template-name="application">
<div class="row">
<div class="col-md-12">
<h1>Hello from Ember!</h1>
{{outlet}}
</div>
</div>
</script>
<script type="text/x-handlebars" data-template-name="index">
<p>This is a github explorer for all the users.</p>
<ul>{{#each dev in controller}}
<li>{{dev}}</li>
{{/each}}
</ul>
<p>
<button class="btn btn-success" {{action "clicked"}}>Click Me</button>
</p>
<p>{{renderedOn}}</p>
</script>
<script type="text/javascript">
App = Ember.Application.create({
rootElement:"#github-app"
});
App.IndexRoute=Ember.Route.extend({
model:function(){
return [
"Sam",
"Sandy",
"Samudh"
];
}
});
App.IndexController = Ember.ArrayController.extend({
renderedOn : function(){
return new Date();
}.property(),
actions : {
clickMe(){
alert("I been clicked");
}
}
});
</script>
</body>
</html>
Also available at http://jsbin.com/cuxajiyuqa/edit?html,output
You don't have an action with the name 'clicked', and you tell your code to look for an action 'clicked' on clicking the button. Change
{{action "clicked"}}
into
{{action "clickMe"}}
or change the
clickMe(){
action into
clicked(){
and everything should be fine.
Check https://guides.emberjs.com/v2.4.0/templates/actions/ for the documentation on actions
I am trying to use if statement in knockoutjs with databinding:
for example this if should be false and the text in div should be hidden:
<!-- this is what i am trying to get working. -->
<div data-bind="if: little">rank : little</div>
My guess is this piece does not work as intended. It should return false as on start the the clickCount is 0.
this.little = function(){
return this.clickCount() > 5;
};
I have pasted the code of app.js and index.html.
this is app.js
var ViewModel = function (){
this.clickCount = ko.observable(0);
this.name = ko.observable('Tabby');
this.imgSrc = ko.observable('img/2.jpg');
this.imgAttribution = ko.observable('http://www.flickr.com/photos/big');
this.incrementCounter = function() {
this.clickCount(this.clickCount() + 1);
};
// this is not returning false as it should.
this.little = function(){
return this.clickCount() > 5;
};
}
ko.applyBindings(new ViewModel());
this is index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Cat Clicker</title>
</head>
<body>
<div>
<h2 data-bind="text: name"></h2>
<div data-bind="text: clickCount"></div>
<!-- this is what i am trying to get working. -->
<div data-bind="if: little">rank : little</div>
<img src="" alt="cute cat" data-bind="click: incrementCounter, attr:{src: imgSrc}">
</div>
<script src="js/lib/knockout-3.2.0.js"></script>
<script src="js/app.js"></script>
</body>
</html>
Hi you can use visible Binding of knockout
Following code will work for you:
<div data-bind="visible: !little()">rank : little</div>
OR
<div data-bind="visible: little()">rank : little</div>
I've followed this basic AngularJS tutorial : https://www.youtube.com/watch?v=WuiHuZq_cg4&list=PL173F1A311439C05D
Everything went well until I added the clearCompleted() method. it does not seem to be working:
HTML:
<!DOCTYPE html>
<html ng-app>
<head>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.0.1/angular.min.js"></script>
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.6.0/underscore-min.js"></script>
<script type="text/javascript" src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<script type="text/javascript" src="todo.js"></script>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<link rel="stylesheet" href="todo.css">
</head>
<body>
<div ng-controller="TodoCtrl">
<h2>Total todos: {{getTotalTodos()}} </h2>
<ul class="unstyled">
<li ng-repeat="todo in todos">
<input type="checkbox" ng-model="todo.done">
<span class="done-{{todo.done}}">{{todo.text}}</span>
</li>
</ul>
<form class="form-horizontal">
<input type="text" ng-model="formTodoText" ng-model-instant>
<button class="btn" ng-click="addTodo()"><i class="icon-plus"></i>Add</button>
</form>
<button class="btn-large" ng-click="clearCompletedTodos()">
Clear Completed
</button>
</div>
</body>
</html>
JS:
function TodoCtrl($scope) {
$scope.todos = [
{text: 'Learn Anagular', done:false},
{text: 'Build an app', done:false}
];
$scope.getTotalTodos = function() {
return $scope.todos.length;
};
$scope.addTodo = function() {
$scope.todos.push({text: $scope.formTodoText, done: false});
$scope.formTodoText = '';
};
$scope.clearCompletedTodos = function() {
$scope.todos = _.filter($scope.todos, function(todo) {
return !todo.done;
});
};
}
the "completed todos" are not getting removed .
Here is what I have done and it works for me:
Please notice that the follow lines has been changed (http:// added)
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.6.0/underscore-min.js"></script>
<script type="text/javascript" src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<script type="text/javascript" src="todo.js"></script>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
to the follow
<script type="text/javascript" src="http://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.6.0/underscore-min.js"></script>
<script type="text/javascript" src="http://netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<script type="text/javascript" src="todo.js"></script>
<link rel="stylesheet" href="http://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
I met the same problem, actually, write it like below, it works fine:
$scope.clearCompleted = function(){
$scope.todos = $scope.todos.filter(function(todo){
return !todo.done;
})
};
Actually none of those worked for me; I used this one.
var t = [];
angular.forEach($scope.todos, function (i)
{
if (!i.done)
t.push({text: i.text, done: i.done});
});
$scope.todos = t;
I am trying out the basics of AngularJS first time. I am trying out ng-repeat first time. However it is not working.
Here is a non working jsfiddle.
I have written the code in single standalone HTML file as follows and also angular.js file resides in the same directory
<html ng-app>
<head>
<script type="text/javascript" src="angular.js"></script>
<script type="text/javascript">
var users = [
{
name:"Mahesh",
description:"A geek",
age:"22"
},
{
name:"Ganesh",
description:"A nerd",
age:"25"
},
{
name:"Ramesh",
description:"A noob",
age:"27"
},
{
name:"Ketan",
description:"A psychopath",
age:"26"
},
{
name:"Niraj",
description:"Intellectual badass",
age:"29"
}
];
</script>
</head>
<body>
<div>
<div data-ng-repeat="user in users">
<h2>{{user.name}}</h2>
<div>{{user.description}}</div>
</div>
</div>
</body>
</html>
users must refer to a property that is accessible on the current scope. Scopes are AngularJS way of tying data from and to HTML. This is explained further in the "Model and Controller" chapter of the second tutorial page. See a working version of your Fiddle here.
HTH!
you have not define the controller such as
myapp.controller("AppController",function($scope){
$scope.users=[
{
name:"Mahesh",
description:"A geek"
},
];
});
/// than you can call controller to the view such as below code :
<body ng-controller="AppController">
<div><div data-ng-repeat="user in users">
<h2>{{user.name}}</h2>
<div>{{user.description}}</div>
</div>
</div>
</body>
Live Example you can access by this link : http://jsfiddle.net/9yHjj/
Your code should have been like this....
<html ng-app="app">
<head>
<script type="text/javascript" src="angular.js"></script>
<script type="text/javascript">
var app = angular.module("app",[]).controller(AppController,["$scope",function($scope){
$scope.users=[
{
name:"Mahesh",
description:"A geek",
age:"22"
},
{
name:"Ganesh",
description:"A nerd",
age:"25"
},
{
name:"Ramesh",
description:"A noob",
age:"27"
},
{
name:"Ketan",
description:"A psychopath",
age:"26"
},
{
name:"Niraj",
description:"Intellectual badass",
age:"29"
}
];
}])
</script>
</head>
<body ng-controller="AppController">
<div>
<div data-ng-repeat="user in users">
<h2>{{user.name}}</h2>
<div>{{user.description}}</div>
</div>
</div>
</body>
</html>
<html ng-app="myapp1">
<head>
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<script type="text/javascript">
var myapp = angular.module("myapp1",[]);
myapp.controller("AppController",function($scope){
$scope.users=[
{
name:"Mahesh",
description:"A geek",
age:"22"
},
{
name:"Ganesh",
description:"A nerd",
age:"25"
},
{
name:"Ramesh",
description:"A noob",
age:"27"
},
{
name:"Ketan",
description:"A psychopath",
age:"26"
},
{
name:"Niraj",
description:"Intellectual badass",
age:"29"
}
];
});
</script>
</head>
<body ng-controller="AppController">
<div>
<div data-ng-repeat="user in users">
<h2 ng-bind="user.name"></h2>
<div>{{user.description}}</div>
</div>
</div>
</body>
</html>
This code should work
I am started learning knockoutjs and I have faced an error. The Aptana editor shows an error at the:
data-bind: ....
property of the tag complaining that it is a proprietary tag. I have made sure to include all the needed javascript files plus I have checked a prior question:knockoutjs template not working.
Here is my code:
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript' src='jquery-1.8.2.min.js'></script>
<script src='jquery.tmpl.min.js' type='text/javascript'></script>
<script src='knockout-2.2.0.js' type='text/javascript'></script>
</head>
<body>
<script>
function AppViewModel() {
this.firstName = "Bert";
this.lastName = "Bertington";
}
ko.applyBindings(new AppViewModel());
</script>
<p>First name: <strong data-bind="text: firstName"></strong></p>
<p>Last name: <strong data-bind="text: lastName"></strong></p>
</body>
</html>
Even after ignoring Aptana and hoping that the browser will show it I still get nothing. I am using Firefox 16 but I also tried on IE 8 but to no avail.
Move your script tag underneath your markup.
<body>
<p>First name: <strong data-bind="text: firstName"></strong></p>
<p>Last name: <strong data-bind="text: lastName"></strong></p>
<script>
function AppViewModel() {
this.firstName = "Bert";
this.lastName = "Bertington";
}
ko.applyBindings(new AppViewModel());
</script>
</body>