[英]Why can't I have two ng-app directives in a given HTML page - AngularJS?
I get the output only if I remove one of the directives ie ng-app - demo1 and the models. 仅当我删除指令之一即ng-app-demo1和模型时,我才获得输出。 Why I can't have two ng-app working at the same time.
为什么我不能同时工作两个ng-app。 I am new to Angular JS and building up my fundamentals.
我是Angular JS的新手,并建立了自己的基础知识。 I get the desired output if I run one directive at a time.
如果一次运行一个指令,则会得到所需的输出。 So, in this example if I remove the demo ng-app, scripts and controller, I get the desired output.
因此,在此示例中,如果我删除了演示ng-app,脚本和控制器,则会得到所需的输出。 If I remove the demo1 ng-app scripts and controller, I get the first part working fine.
如果删除demo1 ng-app脚本和控制器,则第一部分工作正常。 How can I get both the directives working at the same time?
如何使两个指令同时工作?
<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/html">
<head>
<meta charset="UTF-8">
<title>Event Registration</title>
<link rel="stylesheet" href="css/bootstrap.css" />
</head>
<body>
<h1> Guru99 Global Event </h1>
<script src="lib/angular.min.js"></script>
<script src="lib/bootstrap.js"></script>
<script src="lib/jquery-3.2.1.js"> </script>
<div ng-app="DemoApp" ng-controller="DemoController">
Tutorial Name: <input type="text" ng-model="tutorialName"> <br>
<br>
This tutorial is {{tutorialName}}
</div>
<script type="text/javascript">
var app = angular.module('DemoApp',[]);
app.controller('DemoController',function($scope)
{
$scope.tutorialName = "Checking Angular JS" ;
}
);
</script>
<div ng-app="DemoApp1" ng-controller="DemoController1">
<! behaviour >
{{fullName("Guru","99")}}
</div>
<script type="text/javascript">
var app = angular.module('DemoApp1', []);
app.controller('DemoController1',function($scope)
{
$scope.fullName=function(firstName, lastName)
{
return firstName + lastName;
}
});
</script>
</body>
</html>
The output is 输出是
Guru99 Global Event
Tutorial Name:
This tutorial is Checking Angular JS
{{fullName("Guru","99")}}
From the Docs: 从文档中:
There are a few things to keep in mind when using
ngApp
:使用
ngApp
时要牢记以下ngApp
:
- only one AngularJS application can be auto-bootstrapped per HTML document.
每个HTML文档只能自动引导一个AngularJS应用程序。 The first
ngApp
found in the document will be used to define the root element to auto-bootstrap as an application.在文档中找到的第一个
ngApp
将用于定义根元素以作为应用程序自动引导。 To run multiple applications in an HTML document you must manually bootstrap them using angular.bootstrap instead.要在HTML文档中运行多个应用程序,您必须使用angular.bootstrap手动引导它们。
— AngularJS ng-app Directive API Reference
— AngularJS ng-app指令API参考
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