I have a code snippet in my content which is a model fetched from http. I am using syntax highlighter to prettify the code. So I need to call a javascript function as soon as the DOM is updated for that particular model.
Here is a sample code to make it clear. I am using alert to demonstrate it. In my project I would use a third party plugin which will find matching dom elements and remodel them.
Here,
I want the alert to occur after the list is displayed
jsfiddle :
http://jsfiddle.net/7xZde/2/
My controller has something like this.
$scope.items = Model.notes();
alert('test');
alert comes even before the items list is shown, I want it after the list is displayed.
Any hint to help me achieve this.
We need to use $timeout ,
$scope.items = Model.notes();
$timeout(function () {
alert('test');
})
Yeah it was silly , $timeout seemed to be a misnomer to me. I am 2 days old to angularjs . Sorry for wasting your time.
Lucky for you, I wanted to do the exact same thing. Mutation observers are the path forward, but if you need backwards compatibility with older browsers, you'll need a bit more code than this.
Working plunker for Firefox, Chrome, and Safari.
Javascript:
var app = angular.module('plunker', [])
.controller('MainCtrl', function($scope) {
$scope.name = 'World';
})
.directive('watchChanges', function ($parse, $timeout) {
return function (scope, element, attrs) {
var setter = $parse(attrs.watchChanges).assign;
// create an observer instance
var observer = new MutationObserver(function (mutations) {
mutations.forEach(function (mutation) {
$timeout(function () {
var text = angular.element('<div></div>').text(element.html()).text();
setter(scope, text);
});
});
});
// configuration of the observer:
var config = {
attributes: true,
childList: true,
characterData: true,
subtree: true
};
// pass in the target node, as well as the observer options
observer.observe(element[0], config);
};
});
HTML:
<body ng-controller="MainCtrl">
<div watch-changes="text">
<p>Hello {{ name }}</p>
<label>Name</label>
<input type="text" ng-model="name" />
</div>
<pre>{{text}}</pre>
</body>
Related
I have this simple scenario:
Input element which value is changed by jQuery's val() method.
I am trying to update the angular model with the value that jQuery set. I tried to write a simple directive, but it's not doing what I want.
Here's the directive:
var myApp = angular.module('myApp', []);
myApp.directive('testChange', function() {
return function(scope, element, attrs) {
element.bind('change', function() {
console.log('value changed');
})
}
})
this is the jQuery part:
$(function(){
$('button').click(function(){
$('input').val('xxx');
})
})
and html:
<div ng-app="myApp">
<div ng-controller="MyCtrl">
<input test-change ng-model="foo" />
<span>{{foo}}</span>
</div>
</div>
<button>clickme</button>
Here is the fiddle with my try:
http://jsfiddle.net/U3pVM/743/
Can someone please point me in the right direction?
ngModel listens for "input" event, so to "fix" your code you'd need to trigger that event after setting the value:
$('button').click(function(){
var input = $('input');
input.val('xxx');
input.trigger('input'); // Use for Chrome/Firefox/Edge
input.trigger('change'); // Use for Chrome/Firefox/Edge + IE11
});
For the explanation of this particular behaviour check out this answer that I gave a while ago: "How does AngularJS internally catch events like 'onclick', 'onchange'?"
But unfortunately, this is not the only problem you have. As pointed out with other post comments, your jQuery-centric approach is plain wrong. For more info take a look at this post: How do I “think in AngularJS” if I have a jQuery background?).
Hope this is useful for someone.
I was unable to get the jQuery('#myInputElement').trigger('input') event to be picked up my angular app.
I was however, able to get angular.element(jQuery('#myInputElement')).triggerHandler('input') to be picked up.
The accepted answer which was triggering input event with jQuery didn't work for me. Creating an event and dispatching with native JavaScript did the trick.
$("input")[0].dispatchEvent(new Event("input", { bubbles: true }));
I don't think jQuery is required here.
You can use $watch and ng-click instead
<div ng-app="myApp">
<div ng-controller="MyCtrl">
<input test-change ng-model="foo" />
<span>{{foo}}</span>
<button ng-click=" foo= 'xxx' ">click me</button>
<!-- this changes foo value, you can also call a function from your controller -->
</div>
</div>
In your controller :
$scope.$watch('foo', function(newValue, oldValue) {
console.log(newValue);
console.log(oldValue);
});
You have to use the following code in order to update the scope of the specific input model as follows
$('button').on('click', function(){
var newVal = $(this).data('val');
$('select').val(newVal).change();
var scope = angular.element($("select")).scope();
scope.$apply(function(){
scope.selectValue = newVal;
});
});
I made modifications on only controller initialization by adding listener on action button:
$(document).on('click', '#action-button', function () {
$timeout(function () {
angular.element($('#input')).triggerHandler('input');
});
});
Other solutions did not work in my case.
I know it's a bit late to answer here but maybe I may save some once's day.
I have been dealing with the same problem. A model will not populate once you update the value of input from jQuery. I tried using trigger events but no result.
Here is what I did that may save your day.
Declare a variable within your script tag in HTML.
Like:
<script>
var inputValue="";
// update that variable using your jQuery function with appropriate value, you want...
</script>
Once you did that by using below service of angular.
$window
Now below getData function called from the same controller scope will give you the value you want.
var myApp = angular.module('myApp', []);
app.controller('imageManagerCtrl',['$scope','$window',function($scope,$window) {
$scope.getData = function () {
console.log("Window value " + $window.inputValue);
}}]);
I've written this little plugin for jQuery which will make all calls to .val(value) update the angular element if present:
(function($, ng) {
'use strict';
var $val = $.fn.val; // save original jQuery function
// override jQuery function
$.fn.val = function (value) {
// if getter, just return original
if (!arguments.length) {
return $val.call(this);
}
// get result of original function
var result = $val.call(this, value);
// trigger angular input (this[0] is the DOM object)
ng.element(this[0]).triggerHandler('input');
// return the original result
return result;
}
})(window.jQuery, window.angular);
Just pop this script in after jQuery and angular.js and val(value) updates should now play nice.
Minified version:
!function(n,t){"use strict";var r=n.fn.val;n.fn.val=function(n){if(!arguments.length)return r.call(this);var e=r.call(this,n);return t.element(this[0]).triggerHandler("input"),e}}(window.jQuery,window.angular);
Example:
// the function
(function($, ng) {
'use strict';
var $val = $.fn.val;
$.fn.val = function (value) {
if (!arguments.length) {
return $val.call(this);
}
var result = $val.call(this, value);
ng.element(this[0]).triggerHandler('input');
return result;
}
})(window.jQuery, window.angular);
(function(ng){
ng.module('example', [])
.controller('ExampleController', function($scope) {
$scope.output = "output";
$scope.change = function() {
$scope.output = "" + $scope.input;
}
});
})(window.angular);
(function($){
$(function() {
var button = $('#button');
if (button.length)
console.log('hello, button');
button.click(function() {
var input = $('#input');
var value = parseInt(input.val());
value = isNaN(value) ? 0 : value;
input.val(value + 1);
});
});
})(window.jQuery);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div ng-app="example" ng-controller="ExampleController">
<input type="number" id="input" ng-model="input" ng-change="change()" />
<span>{{output}}</span>
<button id="button">+</button>
</div>
If you are using IE, you have to use: input.trigger("change");
add .change() after setting the value.
example:('id').val.('value').change();
also don't forget to add onchange or ng-change tag in html
I did this to be able to update the value of ngModel from the outside with Vanilla/jQuery:
function getScope(fieldElement) {
var $scope = angular.element(fieldElement).scope();
var nameScope;
var name = fieldElement.getAttribute('name');
if($scope) {
if($scope.form) {
nameScope = $scope.form[name];
} else if($scope[name]) {
nameScope = $scope[name];
}
}
return nameScope;
}
function setScopeValue(fieldElement, newValue) {
var $scope = getScope(fieldElement);
if($scope) {
$scope.$setViewValue(newValue);
$scope.$validate();
$scope.$render();
}
}
setScopeValue(document.getElementById("fieldId"), "new value");
Not what OP asked, but for any soul that might be as well writing an userscript that goes through input fields and fills the required details. Nothing (fully) worked for me, but finally managed to get it done this way:
var el = $('#sp_formfield_fw_ip');
el.val("some value");
angular.element(el).triggerHandler('focus');
angular.element(el).triggerHandler('input');
angular.element(el).triggerHandler('change');
angular.element(el).triggerHandler('blur');
Open developer tools, and inspect input field for added events. There I found all of them (in my case): focus, input, change and blur.
I'm creating a project using NodeJS, Express and AngularJS that will have a search form (added via custom directive) and a search results that must be loaded only after the search button is pressed.
The problem is that the method I have created inside the controller can't be found from the search form.
Here is a sample of my code:
app.js
(function() {
var app = angular.module('app', ['app-directives']);
app.controller('AppController', function() {
this.buttonClick = function() {
alert('Test');
};
});
})();
directives.js
(function(){
var app = angular.module('app-directives', []);
app.directive('searchForm', function() {
return {
retrict: 'E',
templateUrl: '/partials/search-form.html'
};
});
app.directive('searchResults', function() {
return {
retrict: 'E',
templateUrl: '/partials/search-results.html'
};
});
})();
search-form.html
<input type="text" id="query" />
<button onclick="buttonClick">Search</button>
page-content.html
<section id="mainContent">
<search-form></search-form>
<search-results></search-results>
</section>
UPDATE
The second question will be posted in another thread.
About your first question:
You are using onclick attribute instead angular's 'ng-click' in the button search. This could be the problem. And do not forget to also add the 'ng-app' and 'ng-controller' tags. If not, your method will never be visible.
I also would recommend you to use $scope service instead of 'this' for attaching models and functions you later will use in your views.
Regards
On page load the console log prints but the toggleClass/click won't work I even use angular.element but it has the same result.I need to change state in order for the toggleClass to work.I dunno what's wrong in my code.
.run(['$rootScope', function ($rootScope) {
console.log('test');//this prints test and it's ok
//this part won't load at the first loading of page.
$('.toggle-mobile').click(function(){
$('.menu-mobile').toggle();
$(this).toggleClass('toggle-click');
});
//....
}])
even doing it this way doesn't work.
$rootScope.$on('$viewContentLoaded', function () {
angular.element('.toggle-mobile').on('click', function (event) {
angular.element(this).toggleClass('toggle-click');
angular.element('.menu-mobile').toggle();
event.preventDefault();
});
});
The Angular way to render items is different from "On DOM Ready" that is why we need to treat these as 2 separate things.
Angular could render items later on even after DOM is ready, this could happen for example if there is an AJAX call($http.get) and that is why a directive may be the recommended approach.
Try something like this:
<body ng-controller="MainCtrl">
<div toggle-Me="" class="toggle-mobile"> Sample <div class="menu-mobile">Sample 2</div>
</div>
<script>
var myApp = angular.module('myApp', []);
myApp.controller('MainCtrl', ['$scope', function ($scope) {}]);
myApp.directive("toggleMe", function() {
return {
restrict: "A", //A - means attribute
link: function(scope, element, attrs, ngModelCtrl) {
$(element).click(function(){
$('.menu-mobile').toggle();
$(this).toggleClass('toggle-click');
});
}
};
});
...
By declaring the directive myApp.directive("toggleMe",... as an attribute toggle-Me="" every time angular generates the input element it will execute the link function in the directive.
Disclaimer: Since the post lacks from a sample html I made up something to give an idea how to implement the solution but of course the suggested html is not part of the solution.
I am looking for a way to obtain an iframe contentWindow object and post a message to it after some action of the user. My current solution does not feel ok with angular at all (especially accessing the DOM from the controller).
I have created a plunker demonstrating the issue:
http://plnkr.co/edit/aXh4jydWGWfK3QQD4edd
Is the a more angular way to execute the postMessage?
controller:
app.controller('Main', function($scope) {
$scope.click = function() {
var iframe = document.getElementById("inner").contentWindow;
iframe.postMessage("Hello iframe", '*');
}
});
html:
<body ng-controller="Main">
<button ng-click="click()">send message</button>
<iframe id="inner" src="inner.html"/>
</body>
I realize your question is over a year old at this point but I've recently had a similar need so I thought I'd post my solution. Originally I had something like you posted but as you pointed out this doesn't feel very "Angular". It's also not easily testable which I supposed is also not very "Angular".
Instead I've refactored my code to implement the iframe as a directive. I then $broadcast() events from my app's controllers and have the directive listen for them. This code can probably be improved quite a bit but it's feels a little more "Angular" and avoids directly touching the DOM.
'use strict';
angular.module('app')
.directive('angularIframe', ['$rootScope', function($rootScope) {
return {
restrict: 'E',
replace: true,
template: '<iframe id="game" src="/iframe/index.html" width="100%" height="100%" frameboarder="0" scrolling="no"></iframe>',
link: function(scope, elem) {
var off = $rootScope.$on('app.postmessage', function(ev, data, targetOrigin) {
var str = JSON.stringify(data);
targetOrigin = targetOrigin || '*';
elem[0].contentWindow.postMessage(str, targetOrigin);
});
// See: http://stackoverflow.com/a/14898795/608884
elem.on('$destroy', function() {
off();
});
}
};
}]);
You can then use this directive by adding <game></game> somewhere in your application.
In a controller you can now broadcast the app.postmessage event along with some data to invoke postMessage() on the iframe:
var myData = { foo: 'bar' };
$rootScope.$broadcast('app.postmessage', myData);
I'm trying to make a directive angularJS directive for Twitter Bootstrap Modal.
var demoApp = angular.module('demoApp', []);
demoApp.controller('DialogDemoCtrl', function AutocompleteDemoCtrl($scope) {
$scope.Langs = [
{Id:"1", Name:"ActionScript"},
{Id:"2", Name:"AppleScript"},
{Id:"3", Name:"Asp"},
{Id:"4", Name:"BASIC"},
{Id:"5", Name:"C"},
{Id:"6", Name:"C++"}
];
$scope.confirm = function (id) {
console.log(id);
var item = $scope.Langs.filter(function (item) { return item.Id == id })[0];
var index = $scope.Langs.indexOf(item);
$scope.Langs.splice(index, 1);
};
});
demoApp.directive('modal', function ($compile, $timeout) {
var modalTemplate = angular.element("<div id='{{modalId}}' class='modal' style='display:none' tabindex='-1' role='dialog' aria-labelledby='myModalLabel' aria-hidden='true'><div class='modal-header'><h3 id='myModalLabel'>{{modalHeaderText}}</h3></div><div class='modal-body'><p>{{modalBodyText}}</p></div><div class='modal-footer'><a class='{{cancelButtonClass}}' data-dismiss='modal' aria-hidden='true'>{{cancelButtonText}}</a><a ng-click='handler()' class='{{confirmButtonClas}}'>{{confirmButtonText}}</a></div></div>");
var linkTemplate = "<a href='#{{modalId}}' id= role='button' data-toggle='modal' class='btn small_link_button'>{{linkTitle}}</a>"
var linker = function (scope, element, attrs) {
scope.confirmButtonText = attrs.confirmButtonText;
scope.cancelButtonText = attrs.cancelButtonText;
scope.modalHeaderText = attrs.modalHeaderText;
scope.modalBodyText = attrs.modalBodyText;
scope.confirmButtonClass = attrs.confirmButtonClass;
scope.cancelButtonClass = attrs.cancelButtonClass;
scope.modalId = attrs.modalId;
scope.linkTitle = attrs.linkTitle;
$compile(element.contents())(scope);
var newTemplate = $compile(modalTemplate)(scope);
$(newTemplate).appendTo('body');
$("#" + scope.modalId).modal({
backdrop: false,
show: false
});
}
var controller = function ($scope) {
$scope.handler = function () {
$timeout(function () {
$("#"+ $scope.modalId).modal('hide');
$scope.confirm();
});
}
}
return {
restrict: "E",
rep1ace: true,
link: linker,
controller: controller,
template: linkTemplate
scope: {
confirm: '&'
}
};
});
Here is JsFiddle example http://jsfiddle.net/okolobaxa/unyh4/15/
But handler() function runs as many times as directives on page. Why? What is the right way?
I've found that just using twitter bootstrap modals the way the twitter bootstrap docs say to is enough to get them working.
I am using a modal to house a user edit form on my admin page. The button I use to launch it has an ng-click attribute that passes the user ID to a function of that scope, which in turn passes that off to a service. The contents of the modal is tied to its own controller that listens for changes from the service and updates values to display on the form.
So.. the ng-click attribute is actually only passing data off, the modal is still triggered with the data-toggle and href tags. As for the content of the modal itself, that's a partial. So, I have multiple buttons on the page that all trigger the single instance of the modal that's in the markup, and depending on the button clicked, the values on the form in that modal are different.
I'll take a look at my code and see if I can pull any of it out to build a plnkr demo.
EDIT:
I've thrown together a quick plunker demo illustrating essentially what I'm using in my app: http://embed.plnkr.co/iqVl0Wb57rmKymza7AlI/preview
Bonus, it's got some tests to ensure two password fields match (or highlights them as errored), and disables the submit button if the passwords don't match, or for new users username and password fields are empty. Of course, save doesn't do anything, since it's just a demo.
Enjoy.
There is a working native implementation in AngularStrap for Bootstrap3 that leverages ngAnimate from AngularJS v1.2+
Demo : http://mgcrea.github.io/angular-strap/##modals
You may also want to checkout:
Source : https://github.com/mgcrea/angular-strap/blob/master/src/modal/modal.js
Plunkr : http://plnkr.co/edit/vFslNmBAoKPVXtdmBXgv?p=preview
Well, unless you want to reinvent this, otherwise I think there is already a solution.
Check out this from AngularUI. It runs without twitter bootstrap.
I know it might be late but i started trying to figure out why the handler got called several times as an exercise and I couldn't stop until done :P
The reason was simply that each div you created for each modal had no unique id, once I fixed that everything started working. Don't ask me as to what the exact reason for this is though, probably has something to do with the $('#' + scope.modalId).modal() call.
Just though I should post my finding if someone else is trying to figure this out :)