It is used to define an expression that execute when an HTML element gets focus.
Sample coding for ng-focus directive in AngularJS:
Tryit<!DOCTYPE html><html><head><title>Wikitechy AngularJS Tutorials</title><script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/
angular.min.js"></script></head><body ng-app=""><h2>Wikitechy ng-focus Directive in AngularJS Tutorials</h2><lable>Enter the text:</lable><input ng-focus="count = count + 1" ng- init="count=0"><h3>count = {{ count }}</h3><h3>The "count" variable value will be increased when the input
field gets focus.</h3></body></html>
Code Explanation for ng-focus directive in AngularJS:
AngularJS is distributed as a JavaScript file, and can be added to a HTML page with a <script> tag.
The AngularJS application is defined by ng-app=" ". The application runs inside the <body> tag. It’s also used to define a <body> tag as a root element.
The ng-focus= “count=count+1” is used to increase the count variable by one, when the input field gets focus.
The ng-init="count = 0" is used to define the initial value of the count variable is “0”.
The {{ count }} is used to dynamically bind the count variable value when the input field gets focus.
Sample Output for ng-focus directive in AngularJS
The output displays that the input field gets focus and the content “Count=1”. Here the variable “count” will be increased a value by 1, because only one time the input field gets focus.
