I'm trying to set a variable, selected.child
, on the $scope
so that I can use it elsewhere. I'm still new to scopes in Angular, but not sure why I can't set something on the scope from within the directive. I can call scope functions.
I have a JSfiddle for it and code is posted below.
Thanks for the help in advance.
The HTML:
<div ng-controller="DashCtrl">
<h3>{{selected.child}}<h3>
<div ng-repeat="child in children" select={{child}}>
{{child.username}}
</div>
</div>
The javascript:
var dash = angular.module('dash', []);
dash.directive('select', function () {
return {
restrict: "A",
scope: false,
link: function (scope, element, attrs) {
element.bind('click', function () {
scope.selected.child = jQuery.parseJSON(attrs.select); //Neither this
scope.setSelected(jQuery.parseJSON(attrs.select)); //Nor this is working
if (attrs.select != scope.selected) {
other_elements = angular.element(document.querySelectorAll('[select]'));
for (var i = 0; i < other_elements.length; i++) {
elm = jQuery(other_elements[i]);
elm.css('background', 'none');
}
element.css('background', '#F3E2A9');
}
});
}
};
});
dash.controller('DashCtrl', function ($scope) {
$scope.setSelected = function (child) {
$scope.selected.child = child;
};
$scope.children = [{
"age_group": "6-8",
"username": "my_child"
}, {
"age_group": "8-10",
"username": "another_child"
}];
$scope.selected = {
child: "none"
};
});
Scope in a Directive Well, all of the directives have a scope associated with them. This scope object is used for accessing the variables and functions defined in the AngularJS controllers, and the controller and link functions of the directive.
The $scope object used by views in AngularJS are organized into a hierarchy. There is a root scope, and the $rootScope can has one or more child scopes.
The $ in AngularJs is a built-in object.It contains application data and methods.
$watch() function is used to watch the changes of variables in $scope object. Generally the $watch() function will create internally in Angularjs to handle variable changes in application. Let us understand with the following example to understand how to implement $watch().
You are missing a call to $apply Just modify your code as below
scope.selected.child = jQuery.parseJSON(attrs.select); //Neither this
//scope.setSelected(jQuery.parseJSON(attrs.select)); //Nor this is working
scope.$apply();
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With