javascript - What is the role of ng-app directive? -
i new angularjs. trying write simple angular application. wondering role of ng-app directive.
<html ng-app> and possible add ng-app in div tag instead of html tag? if possible, there differences between <html ng-app> , <div ng-app>, example, operating efficiency ?
the ng-app directive designates root element of application , typically placed near root element of page - e.g. on <body> or <html> tags.you can have 1 ng-app directive in html document.it used load various angularjs modules in angularjs application. angularjs framework process dom elements , child elements ng-app directive applied
usage
<div ng-app="" ng-controller="myctrl"> </div> or
<div ng-app="myapp" ng-controller="myctrl"> </div> var app = angular.module('myapp', []); 
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