I'm new AngularJS, I'm trying to test the most basic form using AngularJS in JSFiddle. I'm not sure if I forget to configure anything in JSFiddle, but it is not working and it should.
I followed a basic sample from here.
I also include the CDN from here.
Here is the Angular code:
var app = angular.module('myApp', []);
app.controller('formCtrl', function($scope) {
$scope.firstname = "John";
});
Link to my Fiddle: http://jsfiddle.net/bheng/tth4guev/
Settings
include
How would one go about debugging this further?
There are two things missing
(i) You need to add ng-app directive as follows,
<div ng-app="myApp" ng-controller="formCtrl">
(ii) Change the angular.js script version above 1.1 to use without a global controller, and change load type as No wrap in <head>
WORKING FIDDLE
I see, you did not add a name to your controller,and Angular App but in the JS you are accessing 'formctrl'. Go ahead and add a div around the form and add a ng-app='myApp' and a ng-controller='form-ctrl' to your form and it should work.
You need to wrap the form tag in a div tag with ng-app attribute. Your h1 tag should be encapsulated within the div tag as well...
Here's a working example:
<div ng-app="">
<form>
First Name: <input type="text" ng-model="firstname">
</form>
<h1>You entered: {{firstname}}</h1>
</div>
So here's the thing I saw with your code:
You need to add the name of the App and the controller to the div.
Also you are repeating the name of the person in both fields, if you wish you can make an object with the person information to access each of his data fields:
<div ng-app="myApp" ng-controller="formCtrl">
<form>
Email: <input type="text" ng-model="person.firstname" />
Password: <input type="text" ng-model="person.password" />
</form>
<h1>You entered: {{ person.firstname }}</h1>
</div>
<script>
var myApp = angular
.module("myApp",[])
.controller("formCtrl", function($scope) {
//here's the object called "person":
var person = {
firstname: "John",
password: "password"
};
$scope.person = person;
});
</script>
Related
I have a project where I'm currently trying to refactor an old system that was hinged on jquery from the ground up with angular 1.x. However, there are a lot of old HTML forms that I'd like to reuse the bulk of so I don't want to recreate them. I'd love it if there was a way to keep it purely angular, but I'm honestly at a loss of how I'd do that (or whether or not I can). I'm fairly new to angular so there are a lot of inner workings to it that I'm still not privy to.
I've searched around on google and other places including here and I can't really even find other people talking about it. That tells me that either I'm searching badly or it's something that I should probably not be working towards.
All the html pages have identically id'd fields so I feel I can reliably base things on that. For example: all forms with first name text boxes have an id of "cl_fname".
Is there anyway that I can accomplish: getting the form, adding an ng-model="cl_fname" or something to the relevant tag and then display the form? I've gotten to the point where I can get the html page, hold it in the scope and then display using ng-bind-html, but figuring out how to add angular attributes to specific elements I can't figure out.
You can achieve this with jQuery and the attr() method.
I created a plunker here that demonstrates adding angular to an existing "plain" html form.
In the example, I'm using id selectors, but you could use any combination of selectors to ensure you get the right elements.
The below is a quick code snippet from my Plunker example:
HTML:
<div ng-app="myApp">
<form id='myForm1' data-test="test2">
<span>First Name:</span>
<input type="text" id="myForm1_firstName" />
<input type="submit" id="myForm1_Submit" value="Go!" />
</form>
</div>
JS:
// set up angular
var myApp = angular.module('myApp', []);
myApp.controller('MyForm1Controller', ['$scope', function($scope) {
$scope.firstName = 'Angular Working!';
}]);
// use jQuery to add the relevent attributes to our form
var jqMyForm1 = $('form#myForm1');
var jqTxtFirstName = jqMyForm1.find('input[type="text"]#myForm1_firstName');
//add controller to form
jqMyForm1.attr('ng-controller', 'MyForm1Controller');
//bind the textbox to the angular 'firstName' variable
jqTxtFirstName.attr('ng-model', "firstName");
EDIT:
just realised you want to load the html form dynamically.
Version 2 of the plunker (here) will now dynamically load a HTML form from an external resource (separate html page), inject it into the current page, add the angular bindings to it, and then get angular to recognise it.
The key to getting angular to recognise the form is the use of the $compile object (angular $compile documentation).
Again, quick snippets of the code in use:
HTML (main page):
<div ng-app="myApp" ng-controller="LoadingController"></div>
HTML (myForm1.html):
<form id='myForm1' data-test="test2">
<span>First Name:</span>
<input type="text" id="myForm1_firstName" />
<input type="submit" id="myForm1_Submit" value="Go!" />
</form>
JS:
// set up angular
var myApp = angular.module('myApp', []);
// main controller for loading the dynamic form
myApp.controller('LoadingController', ['$scope','$http','$compile', function($scope,$http,$compile) {
$scope.loadHtmlForm = function(formURL) {
$http.get(formURL).then(function successCallback(response){
var jqForm = $(response.data);
var jqTxtFirstName = jqForm.find('input[type="text"]#myForm1_firstName');
//add controller to form
jqForm.attr('ng-controller', 'MyForm1Controller');
//bind the textbox to the angular 'firstName' variable
jqTxtFirstName.attr('ng-model', "firstName");
$('div').append(jqForm);
$compile(jqForm[0])($scope);
});
}
$scope.loadHtmlForm('myForm1.html');
}]);
// form controller for managing the data
myApp.controller('MyForm1Controller', ['$scope', function($scope) {
$scope.firstName = 'Angular Working!';
}]);
I got this example from the W3Schools tutorial on AngularJS. I made a small change from binding the value of the checkbox span to using an expression. I figured that the todo list wouldn't update any more. But it still does. What causes the ng-repeat to fire just because I have added a todo item?
http://plnkr.co/edit/Kojz2ODWDS8dFDNzjYR5?p=preview
<!DOCTYPE html>
<html>
<script src= "http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
<body ng-app="myApp" ng-controller="todoCtrl">
<h2>My Todo List</h2>
<form ng-submit="todoAdd()">
<input type="text" ng-model="todoInput" size="50" placeholder="Add New">
<input type="submit" value="Add New">
</form>
<br>
<div ng-repeat="x in todoList">
<input type="checkbox" ng-model="x.done"> <span>{{x.todoText}}</span>
</div>
<p><button ng-click="remove()">Remove marked</button></p>
<script>
var app = angular.module('myApp', []);
app.controller('todoCtrl', function($scope) {
$scope.todoList = [{todoText:'Clean House', done:false}];
$scope.todoAdd = function() {
$scope.todoList.push({todoText:$scope.todoInput, done:false});
$scope.todoInput = "";
};
$scope.remove = function() {
var oldList = $scope.todoList;
$scope.todoList = [];
angular.forEach(oldList, function(x) {
if (!x.done) $scope.todoList.push(x);
});
};
});
</script>
</body>
</html>
Clicking the Add New Button submits the corresponding form and by using ng-submit="todoAdd()" it will call this function. This in turn adds an entry to the todoList in your scope. As this array has been modified the angular digest cycle is triggered and the list is updated.
Some suggestions for your questions: First of all, you mean W3Schools, not the W3C (which is a standardization organization and normally is not doing tutorials, which is why I got curios - Also, you will find lots of reasons why not to use W3Schools when goolgin around or looking at meta). Also, if you compare to some other code, you should include it or at least link to it.
I found it by googling and it seems your only change is using <span>{{x.todoText}}</span> instead of <span ng-bind="x.todoText"></span>. There really is no difference in terms of the digest cycle here. The only difference is that by using {{}} it might at first be rendered as curly brackets in the browser window, before the variable is actually replaced. Thus, it is usually better to use ng-bind.
my app.js:
var app = angular.module('factory', []);
app.controller('Ctrl', function($scope){
$scope.users =[
{name: 'jimbo', info: ''},
{name: 'bobby', info: ''}
];
$scope.addAllInfos = function(){
};
});
my index.html:
<!DOCTYPE html>
<html ng-app="factory">
<head>
<script type="text/javascript" src="angular.min.js"></script>
<script type="text/javascript" src="app.js"></script>
</head>
<body ng-controller="Ctrl">
<div ng-repeat="user in users">
Name: <input value="{{user.name}}"/><br>
Tell me sth: <input/><br><br><br>
</div>
<button ng-click="addAllInfos()">add all infos</button>
</body>
When clicking on "Add all infos" i want to iterate through all my users that i have generated by using ng-repeat and save the input of every "Tell me sth" input in the info-variable of the object.
How can I do so using Angular?
Fiddle
You just need to bind every repeated input to user.info using ngModel directive:
Tell me sth: <input type="text" ng-model="user.info" />
Demo: https://jsfiddle.net/xsakgy6b/2/
Note, that in this case addAllInfos function may become redundant as two-way data binding automatically populates user objects for you.
I think what you're looking for is the ng-model attribute. You should use ng-model on your input fields as well, instead of putting the value into the value attribute. This will allow you to take full control of two-way binding in Angular.
Then you would not really need the addAllInfos function, Angular will keep track of the values and properties of each object in your repeater. The code would look like this.
<div ng-repeat="user in users">
Name: <input type="text" ng-model="user.name"/><br>
Tell me sth: <input type="text" ng-model="user.info"/><br><br><br>
</div>
Here's my updated fiddle
Your first problem is your addAllInfos() function.
You do not have your addAllInfos() function available to the view / html. You need to expose the function, either through $scope, or returned via the controller class.
You can do that like so:
$scope.addAllInfos = function() { // code here };
This will allow you to call a function from the ng-click event on your .
I am a newbie at Angular JS and this is what I started with:
var myApp = angular.module('myApp', []);
myApp.controller('WizardController', ['$scope', function($scope){
$scope.user = {};
$scope.displayName = 'Hello';
}]);
user is used to gather the data in the input fields in my steps <input type='text' ng-model='user.name'> and when I call it like so {{user.name}} what is inside the input text appears in a next step.
My question is how do I get $scope.displayName to display on my page.
<p ng-model="displayName"></p>
<p>{{displayName}}</p>
<p><input type='text' ng-model='displayName'></p>
I have tried all of these and none seem to work. Please help.
here is a jfiddle http://jsfiddle.net/Fc7KZ/
Make sure you added the ng-app and ng-controller attributes to your html
<body ng-app="myApp" ng-controller="WizardController">
<p ng-model="displayName"></p>
<p>{{displayName}}</p>
<p><input type='text' ng-model='displayName'></p>
</body>
Update 1:
Your js fiddle did not have angular library here is the version corrected:
http://jsfiddle.net/Fc7KZ/2/
You seem to be using angular-wizard. Your Fiddle doesn't include Angular or Lodash, which are both pre-requisites of that project. I'm guess your local code doesn't either, if not then that's your problem.
I have a web page with some HTML elements which I cannot edit. I'd like to dynamically attach ng-model attributes to these and have AngularJS re-bind them to the scope. A simplified example of what I want to accomplish can be found here
<script src="//code.jquery.com/jquery-2.1.0.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.16/angular.min.js"></script>
<script>
function MyCtrl($scope) {
$scope.myModel1 = "Hi";
$scope.myModel2 = "there";
var myModel2 = angular.element("#myModel2");
//This won't work
myModel2.attr("ng-model", "myModel2");
}
</script>
<div ng-app ng-controller="MyCtrl">
<input type="text" ng-model="myModel1"/>
<!-- I can't touch this -->
<input type="text" id="myModel2" />
</div>
You need to use $compile (docs)
$compile(myModel2.attr("ng-model", "myModel2"))($scope);
demo
When you load your page, angular uses $compile on the HTML automatically, that's how it knows which elements to assign which directives to. If you just change the attribute like you tried, angular doesn't know. You have to use $compile.