How to Call Function on Page Load in AngularJS?

By Hardik Savani October 20, 2023 Category : jQuery Angular

Today, I am going to show you how to call controller function when page will load in AngularJS. We sometimes require to run function when page load like for example if you need to check user is login or not in AngularJS, It is possible by fire one Ajax request When Page Load.

There are several way to you can do this. I have two example for execute function on page load. In this example i give you very simple example, so you can simply understand and use it properly.

First Example using "data-ng-init" attribute and Second example "$window.onload" function.

So, Let's check both example and try it...

Example 1:

<!DOCTYPE html>
<html>
<head>
	<title>Angularjs call function on page load</title>
	<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular.min.js"></script>
</head>
<body>

	<div ng-app="myApp" ng-controller="mainController" data-ng-init="init()">
		<h2>Angularjs call function on page load</h2>
	</div>

	<script type="text/javascript">
		var myApp = angular.module("myApp", []);		

		myApp.controller("mainController", function($scope, $window) {

			$scope.init = function () {
			 	alert("Angularjs call function on page load");
  			};

		});

	</script>

</body>
</html>

Example 2:

Read Also: AngularJS Check Null Empty or Undefined Variable Value Example
<!DOCTYPE html>
<html>
<head>
	<title>Angularjs call function on page load</title>
	<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular.min.js"></script>
</head>
<body>

	<div ng-app="myApp" ng-controller="mainController">
		<h2>Angularjs call function on page load</h2>
	</div>

	<script type="text/javascript">
		var myApp = angular.module("myApp", []);		

		myApp.controller("mainController", function($scope, $window) {

			$window.onload = function() {
			 	alert("Angularjs call function on page load");
			};

		});

	</script>

</body>
</html>

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