Allow me to clarify with an example.
HTML
<div ng-app="myapp">
<div ng-controller="MyCtrl1">
<button ng-click="showAlert('hello')">First</button>
<button ng-click="showConsole('hello')">for First one only</button>
<button show-alert="first using directive">First with directive</button>
</div>
<div ng-controller="MyCtrl2">
<button ng-click="showAlert('hello second')">Second</button>
<button show-alert="first using directive">Second With directive</button>
</div>
<div ng-controller="MyCtrl3">
<button ng-click="showAlert('hello third')">Third</button>
<button show-alert="third using directive">third with directive</button>
</div>
</div>
JS
var myApp = angular.module('myapp',[]);
myApp
.controller('MyCtrl1', function ($scope) {
$scope.showAlert = function (msg) {
alert(msg);
};
$scope.showConsole = function (msg) {
console.log(msg);
};
})
.controller('MyCtrl2', function ($scope) {
$scope.showAlert = function (msg) {
alert(msg);
};
})
.controller('MyCtrl3', function ($scope) {
$scope.showAlert = function (msg) {
alert(msg);
};
})
.directive('showAlert', function(){
return{
restrict: 'A',
link: function(scope, ele, attr){
var eventName = attr.evetName || 'click';
var mas = attr.showAlert || 'just alert';
ele.on(eventName, function(){
alert(mas);
});
}
};
});
JsFiddleLink
In the provided example, show-alert="[MSG]" demonstrated a more efficient way to avoid code repetition compared to directly using $scope.showAlert in each controller. Therefore, creating a directive was a better choice in this scenario.
However, if $scope.showConsole is only used once and not reused elsewhere, it is acceptable to use it directly within the controller.
Alternatively, you could also create a directive for the showConsole functionality if you anticipate potential future usage in other areas. Ultimately, the decision depends on the specific use-case at hand.