I encountered an issue where the error myFunction() IS NOT DEFINED is appearing:
app.controller('myctrl',function(){
myFunction();
});
function myFunction() {
debugger;
document.getElementById("abc").disabled = false;
}
In this scenario, myFunction is set as onclick="myFunction()" but I am attempting to call it within my function.
What am I doing wrong? Any assistance would be greatly appreciated.
It is not recommended to define functions outside of your angular controller as it can cause issues with the angular context. This can lead to problems such as two way data binding issues and other unexpected behavior.
Additionally, make sure to import the $scope module into your controller in order to define functions on it. While there are alternative methods, using $scope is the most common approach.
Check out this example on JSFiddle for more information.
<div ng-app="myApp" ng-controller="myCtrl">
<button ng-click="alertAgain()">
Show an alert
</button>
</div>
const dontdothis = () => {
alert('function should be within the angular controller');
};
const app = angular.module('myApp', []);
app.controller('myCtrl', ($scope) => {
dontdothis();
$scope.alertAgain = () => {
alert('this is an alert again');
};
});
For more information on AngularJS scope, visit the official documentation.
This particular issue revolves around the concept of scope.
To utilize a function in your HTML, it is essential to connect the function with the scope of your controller by adding $scope. before the function name. For example:
app.controller('myctrl', ['$scope', function() {
$scope.myFunction();
}]);
function myFunction() {
debugger;
document.getElementById("abc").disabled = false;
}
Additionally, if the purpose of your function is to enable an element that was previously disabled, you can achieve this using ng-disabled attribute. I have created a demonstration on Plunker showcasing the use of ng-disabled.
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