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AngularJS ng-app Directive


Let the body element become the root element for the AngularJS application:

<body ng-app="">

<p>My first expression: {{ 5 + 5 }}</p>

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Definition and Usage

The ng-app directive tells AngularJS that this is the root element of the AngularJS application.

All AngularJS applications must have a root element.

You can only have one ng-app directive in your HTML document. If more than one ng-app directive appears, the first appearance will be used.


<element ng-app="modulename">
  content inside the ng-app root element can contain AngularJS code

Supported by all HTML elements.

Parameter Values

Value Description
modulename Optional. Specifies the name of a module to load with the application


Load a module to run in the application

<div ng-app="myApp" ng-controller="myCtrl">
    {{ firstName + " " + lastName }}

var app = angular.module("myApp", []);
app.controller("myCtrl", function($scope) {
    $scope.firstName = "John";
    $scope.lastName = "Doe";
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