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Angularjs Show JavaScript Alert Message (Box) on ng-click with Example

May 6, 2015
Introduction

Here I will explain how to show alert message in
AngularJS or show / display JavaScript alert box or message in AngularJS using ng-click with example. Generally in JavaScript we will use “window” property to show alert message same way in AngularJS we will use “$window” property show alert message.


To show alert message in AngularJS we need to write the code like as shown below


$scope.showalertmessage = function () {
if ($scope.username == undefined)
$window.alert('Please Enter Username')
else
$window.alert('Entered Name is : ' + $scope.username)
}

If you want to check it in complete example you need to write the code like as shown below


<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Angularjs Show JavaScript Alert Message</title>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.9/angular.min.js"></script>
<script type="text/javascript">
var myapp = angular.module('sampleapp', []);
myapp.controller("expressionController", function ($scope,$window) {
$scope.showalertmessage = function () {
if ($scope.username == undefined)
$window.alert('Please Enter Username')
else
$window.alert('Entered Name is : ' + $scope.username)
}
})
</script>
</head>
<body>
<form id="form1">
<div data-ng-app="sampleapp" data-ng-controller="expressionController">
Enter Name : <input type="text" ng-model="username" />
<input type="button" value="Show Alert" ng-click="showalertmessage()" />
</div>
</form>
</body>
</html>

Live Demo

For live demo enter text in below textbox and click below button to see alert message


Enter Name :

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