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<!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?
仅有的幸福2017-05-15 17:00:37
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
仅有的幸福2017-05-15 17:00:37
为什么会报错,说foo是undefined?
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
为什么结果只有一个to Google而没有h1标签里的文字?
这一问就不清楚了。