<!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)
}])为什么会报错，说foo是undefined?
另外下面这段代码也让我不解：
<!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>'
}
})为什么结果只有一个to Google而没有h1标签里的文字？
![[Web-Frontend] Node.js-Schnellstart](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
第一个：console.log(foo)
此处应该是console.log($scope.foo)
第二个：理解replace:true属性的含义
因为你的ng-init定义在ng-controller="myCtrl"之外了。我猜所有的controller初始化完了才会执行ng-init，所以此时foo是undefined
这一问就不清楚了。