In this article I will explain with an example, how to use ng-mouseenter directive 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 directives.
ng-mouseenter – Called when mouse cursor enters the Button.
ng-mouseleave – Called when mouse cursor leaves the Button.
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" value="Submit"
           ng-click="PlusCount()" ng-mouseenter="PlusCount()" ng-mouseleave="MinusCount()" />
    <hr />
    Count: <span style="font-weight:bold">{{Count}}</span>
</div>
 
 

Implementing ng-mouseenter Directive

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 mouse cursor enters the Button, the PlusCount function is called and when the mouse cursor leaves the Button, the MinusCount function is called.
Inside the PlusCount function, the Count variable is incremented by 1 while, inside the MinusCount function the Count variable is decremented by 1 which will be latter 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.PlusCount = function () {
            // Increment the Count by one.
            $scope.Count++;
        }
 
        $scope.MinusCount = function () {
            // Decrement the Count by one.
            $scope.Count--;
        }
    });
</script>
 
 

Screenshot

ng-mouseenter example in AngularJS
 
 

Demo

View Demo
 
 

Downloads

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