<!DOCTYPE html>
<html ng-app="app">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title></title>
<link rel="stylesheet" href="../css/lib/bootstrap4.css">
<script type="text/javascript" src='../js/lib/angular.js' ></script>
<script type="text/javascript" src='js/initAndController.js'></script>
</head>
<body ng-init="foo='bar'">
<p ng-controller="myCtrl">
</p>
</body>
</html>js
var app = angular.module('app', []);
app.controller('myCtrl', ['$scope', function($scope){
console.log(foo)
}])Why does it report an error saying that foo is undefined?
In addition, the following code also puzzles me:
<!DOCTYPE html>
<html ng-app="app">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title></title>
<link rel="stylesheet" href="../css/lib/bootstrap4.css">
<script type="text/javascript" src='../js/lib/angular.js' ></script>
<script type="text/javascript" src='js/directive.js'></script>
</head>
<body ng-controller="myCtrl">
<my-directive />
<h1 ng-init="greet='hello world'">
The greeting is {{greet}}
</h1>
</body>
</html>js
var app = angular.module('app', []);
app.controller('myCtrl', ['$scope', function($scope){
}])
app.directive('myDirective',function(){
return {
restrict : 'E',
replace : true,
template : '<a href="http://google.com">to Google</a>'
}
})Why is there only one result to Google but no text in the h1 tag?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
The first one: console.log(foo)
This should be console.log($scope.foo)
The second one: Understand the meaning of the replace:true attribute
Because your ng-init is defined outside ng-controller="myCtrl". I guess ng-init will not be executed until all controllers are initialized, so foo is undefined at this time
This question is not clear.