I am in need of assistance with AngularJS. How can I re-initialize a variable in scope after using emit? Here is an example code snippet:
$scope.uiConfig = {title: "example"};
$scope.$emit('myCustomCalendar', 'Data to send');
$scope.$on('myCustomCalendar', function () {
$scope.uiConfig = {title: "new Title"};
});When you use the $on function, make sure to provide a callback that can receive parameters including your data:
$scope.$on('myCostumCalendar', function (event, data) {
// The variable 'data' will hold the information you sent
$scope.uiConfig = {title: "New Updated Title"};
});
var myApp = angular.module('myApp',[]);
myApp.controller('mainEventController', ['$scope', function($scope) {
$scope.count = 0;
}]);
myApp.controller('EventController', ['$scope', function($scope) {
debugger;
$scope.$on('MyEvent', function() {
debugger;
$scope.count++;
});
}]);<!DOCTYPE HTML>
<html>
<head>
<title>Basic on controllers</title>
<script src="//code.angularjs.org/snapshot/angular.min.js"></script>
<script src="basiccontroller.js"></script>
</head>
<body ng-app="myApp">
<!-- emit and broadcast -->
<p><b>emit and broadcast</b></p>
<p>----------------------------</p>
<div ng-controller="mainEventController">
Root scope <tt>MyEvent</tt> count: {{count}}
<ul>
<li ng-controller="EventController">
<button ng-click="$emit('MyEvent')">$emit('MyEvent')</button>
<button ng-click="$broadcast('MyEvent')">$broadcast('MyEvent')</button>
<br>
Middle scope <tt>MyEvent</tt> count: {{count}}
<ul>
<li ng-controller="EventController">
Leaf scope <tt>MyEvent</tt> count: {{count}}
</li>
</ul>
</li>
</ul>
</div>
</body>
</html>The code snippet below is not producing the desired output:
When using inherited scope values in the $emit function, the result may be incorrect. Additionally, the emit function may not behave as expected the first time in AngularJS.
Please provide clarification on this matter.
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