In this article I will explain with an example, how to increment variable in AngularJS.
 
 

HTML Markup

The following HTML Markup consists of:
DIV – For applying ng-app and ng-controller AngularJS directives.
Note: If you want to learn more about these directives, please refer my article Introduction to AngularJS.
 
Button – For capturing user input.
The HTML INPUT Button has been assigned with the following AngularJS directive.
ng-click – Called when user clicks the Button.
Note: For more details on ng-click directive, please refer my article ng-click example in AngularJS.
 
SPAN – For displaying message.
<div ng-app="MyApp" ng-controller="MyController">
    <input type="button" ng-click="SetCount()" value="Increment" />
    <hr />
    Click Count : <span style="font-weight:bold">{{Count}}</span>
</div>
 
 

Incrementing variable in AngularJS

Inside the HTML Markup, the following AngularJS script file is inherited:
1. angular.min.js
Then, inside the Controller, the Count variable is set to Zero.
When the Button is clicked, the SetCount function is called.
Inside this function, the Count variable is incremented by 1, which will be later displayed on the page using SPAN element.
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"></script>
<script type="text/javascript">
    var app = angular.module('MyApp', [])
    app.controller('MyController', function ($scope) {
        // By default Count is zero.
        $scope.Count = 0;
        $scope.SetCount = function () {
            // Increment the Count by one.
            $scope.Count++;
        }
    });
</script>
 
 

Screenshot

Increment variable in AngularJS
 
 

Demo

View Demo
 
 

Downloads

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