AngularJS ng app Directive
AngularJS ng-app Directive
The ng-app directive tells AngularJS that this is the root element of the AngularJS application. Without the root element, the application will not run. Moreover, there is only one root element in the whole HTML document. If there are multiple ng-app directives present in an HTML document, then the first one will be used.
< element ng-app="module_name" >
// AngularJS Code goes here
< /element >
|module_name||Optional. Defines the name of a module to load with the application|