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Here's my code, But the $event is undefined. Does anyone know how can I capture the event?
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<script type="text/javascript">
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
$scope.alert = function ($event){
alert($event);
}
});
</script>
<body ng-app="myApp" ng-controller="myCtrl">
<div ng-init="names=['A', 'B', 'C']">
<select class="form-control input-sm" ng-model="fda" ng-change="alert($event)" ng-options="value for value in names">
</select>
</div>
</body>
</html>
510
The ng-change event is triggered at every change in the value. It will not wait until all changes are made, or when the input field loses focus. The ng-change event is only triggered if there is a actual change in the input value, and not if the change was made from a JavaScript.
The ngInit directive allows you to evaluate an expression in the current scope. This directive can be abused to add unnecessary amounts of logic into your templates. There are only a few appropriate uses of ngInit : aliasing special properties of ngRepeat , as seen in the demo below.
The ng-repeat values can be filtered according to the ng-model in AngularJS by using the value of the input field as an expression in a filter. We can set the ng-model directive on an input field to filter ng-repeat values. The below illustrations describes the approach for the implementation.
Another significant difference between ng-click and onclick is the execution context. Code inside an onclick attribute executes against the global window object, while an expression inside of ng-click executes against a specific scope object, typically the scope object representing the model for the current controller.
ngMouse, ng-change does not provide an event object.
But my suggestion is to create another variable, assign $event to that, then pass it via ng-change.
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<script type="text/javascript">
var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
$scope.alert = function ($event){
alert($event);
}
});
</script>
<body ng-app="myApp" ng-controller="myCtrl">
<div ng-init="names=['A', 'B', 'C']">
<select
class="form-control input-sm"
ng-click="event = $event"
ng-model="fda"
ng-change="alert(event)"
ng-options="value for value in names">
</select>
</div>
</body>
</html>More details
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