I have implemented a highlighter directive with assistance of rangy library.
Please have a look at current implementation of highlighter directive:
http://plnkr.co/edit/mYrEfehaTIbzvS0hePq2?p=preview plunker.
Here , I have button within the template which onclick toggles the selection.
Now, I want the same behaviour but this time, button needs to be outside directive template.
Can you help me with it ?
After adding $watch to look out for , I am able to handle the issue.
scope.$watch(function(){return scope.highlight;}, function(value) {
cssApplier.toggleSelection();
});
Running code is at : http://plnkr.co/edit/mYrEfehaTIbzvS0hePq2?p=preview
Hope it helps someone.
Related
I am trying to make a currency converter. When I type in a number in the input box and then press one off the buttons nothing happens. Does anyone know why?
When checking if a button is clicked in Javascript, it uses a function callback to do so. So, where you have:
if (KnappBL.onclick) {...}
Javascript is looking for:
KnappBL.onclick = function() {...}
Then, inside of the function callback, you can execute your code to show that the currency has changed.
EDIT: You can find more information about the onClick callback on Mozilla's website here.
The thing that stands out the most at a glance would be the absence of a function in your javascript. Try adding something along the lines of the code below (fyi I have not tested this so you may need to tweak it to fit your application). :) hope this leads you in the right direction.
function convert(amount, convertfrom, convertTo) {
if ***********************
else if ************************
else if ************************
}
First of all, I'm new in Angularjs and not good at English.
I tried to add <li> by using directive, and below link is completed result of my first purpose.
Add element using directive
Second is passing value from Controller to directive or from directive to Controller, known as two-way binding.
But in this step, I couldn't figure out how to use #,= and '&'.
I guessed it's because of using directive in directive.
In my original code, my modal is made of directive, so button directive seems cannot get value from Controller.
I'm sorry I cannot show you my own code because I don't know how to make many directives in fiddle.
.
.
I wanna know there are any way to add element dynamically without using directive.
No matter what you suggested like link, doc, or something, it'll be great helpful to me.
Just give a little attention please. Thank you. Have a nice day!
This may helpful.
You can use javascript as follows for achieving this.
https://jsfiddle.net/u08pa50z/
angular.module('myApp', [])
.controller('myCtrl', ['$scope', function($scope) {
$scope.count = 0;
var el = document.createElement("ul");
el.style.width="600px";
el.style.height="500px";
el.style.background="green";
var parent=document.getElementById("sib");
parent.appendChild(el);
$scope.myFunc = function() {
var ch = document.createElement("li");
el.appendChild(ch);
};
}]);
You can go with ng-include
Fetches, compiles and includes an external HTML fragment.
I'm designing a particular page where wherever I click I want to go back to the homepage.
All of the page in enclosed in a section:
<section id="test-page-1" ui-sref="project.home">
</section>
The problem is that I have 3 particular buttons in this page and are not working as they should, instead they are also redirecting me to the Home page.
Z-index didn't solve the problem as from what I read it only works on a visual perspective rather than functionality. I'd really like it if I can still use the ui-sref="project.home" in the whole section as it is. Any ideas please ?
In the functions associated with you button clicks, stop the event propagation.
$scope.buttonFunctioanlity = function (e) {
e.stopPropagation();
};
<button ng-click="buttonFunctioanlity($event)">Click Me</button>
You know what ui-sref is right?
Changing your application state and redirecting to different url (Home in your case)
not really understood your problem, but remember you can add ng-click together with ui-sref to do some function before redirecting (might help your logic)
like
<section id="test-page-1"
ng-click="doSomething(someParams)"
ui-sref="project.home"></section>
and controller
$scope.doSomething = function(someParams) {
// bla-bla-blaaa
}
I'm starting to learn angularJS better, and I've noticed that AngularJS tries to make strong emphasis on separating the view from the controller and encapsulation. One example of this is people telling me DOM manipulation should go in directives. I kinda got the hang of it now, and how using link functions that inject the current element allow for great behavior functionality, but this doesn't explain a problem I always encounter.
Example:
I have a sidebar I want to open by clicking a button. There is no way to do this in button's directive link function without using a hard-coded javascript/jquery selector to grab the sidebar, something I've seen very frowned upon in angularJS (hard-coding dom selectors) since it breaks separation of concerns. I guess one way of getting around this is making each element I wish to manipulate an attribute directive and on it's link function, saving a reference it's element property into a dom-factory so that whenever a directive needs to access an element other than itself, it can call the dom-factory which returns the element, even if it knows nothing where it came from. But is this the "Angular way"?
I say this because in my current project I'm using hard-coded selectors which are already a pain to mantain because I'm constantly changing my css. There must be a better way to access multiple DOM elements. Any ideas?
There are a number of ways to approach this.
One approach, is to create a create a sidebar directive that responds to "well-defined" broadcasted messages to open/close the sidebar.
.directive("sidebar", function(){
return {
templateUrl: "sidebar.template.html",
link: function(scope, element){
scope.$root.$on("openSidebar", function(){
// whatever you do to actually show the sidebar DOM content
// e.x. element.show();
});
}
}
});
Then, a button could invoke a function in some controller to open a sidebar:
$scope.openSidebar = function(){
$scope.$root.$emit("openSidebar");
}
Another approach is to use a $sidebar service - this is somewhat similar to how $modal works in angularui-bootstrap, but could be more simplified.
Well, if you have a directive on a button and the element you need is outside the directive, you could pass the class of the element you need to toggle as an attribute
<button my-directive data-toggle-class="sidebar">open</button>
Then in your directive
App.directive('myDirective', function() {
return {
restrict: 'A',
link: function(scope, element, attrs) {
angular.element('.' + attrs.toggleClass).toggleClass('active');
}
};
}
You won't always have the link element argument match up with what you need to manipulate unfortunately. There are many "angular ways" to solve this though.
You could even do something like:
<div ng-init="isOpen = false" class="sidebar" ng-class="{'active': isOpen}" ng-click="isOpen = !isOpen">
...
</div>
The best way for directive to communicate with each other is through events. It also keeps with the separation of concerns. Your button could $broadcast on the $rootScope so that all scopes hear it. You would emit and event such as sidebar.open. Then the sidebar directive would listen for that event and act upon it.
I created a button
<button type="button" ng-click="chooseOptions()" id="chooseOptionButton" ng-bind="whatToDisplay()"></button>
Which shows a <div ng-show=appearOnChoice>on click and toggles back when clicking again!
$scope.chooseOptions=function(){
$scope.appearOnChoice=!$scope.appearOnChoice;
}
However, I also want this element to hide again, when the user clicks anywhere outside this div
element. How can I do this? I need strictly stick with AngularJS and not use jQuery.
Hope you can help me with that.
EDIT: I tried to adapt some of the events of bootstrap datepicker, but I am not sure how to apply it properly
$scope.$on('datepicker.focus', focusElement);
scope.$watch('isOpen', function(value) {
if (value) {
scope.$broadcast('datepicker.focus');
scope.position = appendToBody ? $position.offset(element) : $position.position(element);
scope.position.top = scope.position.top + element.prop('offsetHeight');
$document.bind('click', documentClickBind);
} else {
$document.unbind('click', documentClickBind);
}
});
var focusElement = function() {
$timeout(function() {
self.element[0].focus();
}, 0 , false);
};
How can I adapt this to my case?!
I think that you dont have to write a function, you can use ng-init to create a model, ng-show to show/hide the div based on the value of the model, and with ng-click change the value of the model. See example below:
var myapp = angular.module('myapp',[]);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myapp">
<div ng-init="showDiv = true;" >
<div ng-show="showDiv"> SHOOOOOOOOW </div>
<button ng-click="showDiv = !showDiv;">Click me</button>
</div>
</div>
You can set the model value to be false when the user is clicking everywhere else, and set it again to true when it clicks the button. If you made a fiddle I can help you easier :)
If the DIV has focus, then you can use the ng-blur directive on the DIV to run set appearOnChoice to false. However, if the DIV does not already have focus (which it won't if you are depending on the button to make it visible), you will need to manipulate the DOM in your code (to provide focus) OR create a custom directive to set focus so that the ng-blur directive will work. Check out possibilities for that with this link.
alternatively, you can add an ng-click directive to every clickable object on your view that will hide the DIV when fired. But I don't really think that's the best way to go...
The easiest and cleanest way to handle the click away is to register and event on the document that will remove the element when anything other than it, or its children, are clicked.
For an example of a service that does this see GitHub EnzeyNet/Services
Sorry about the lack of documentation there but after injecting the service you would use it like this.
var divElem
nzService.registerClickAwayAction(function() {
divElem.remove();
}, divElem);
I simply solved it by using a ui bootstrap dropdown. This comes along with an is-open option and closes on click outside.