从 AngularJS 访问全局变量
[英]Access global variable from AngularJS
问题描述
I want to initialize a Angular model with a JSON object which is embedded in a HTML page.
我想用嵌入在 HTML 页面中的 JSON 对象初始化 Angular 模型。 Example:例子：
<html>
<body>
<script type="text/javascript" charset="utf-8">
var tags = [{"name": "some json"}];
</script>
<ul>
<li ng-repeat="tag in tags">{{tag.name}}</li>
</ul>
</body>
</html>
The tags field cannot be resolved, because it is looked up in the $scope . tags字段无法解析，因为它是在$scope查找的。 I tried to access the tags field in my controller like this:我尝试像这样访问控制器中的tags字段：
function TagList($scope, $rootScope) {
$scope.tags = $rootScope.tags;
}
But it doesn't work.但它不起作用。
It works only if I include the TagList directly into the HTML page and render the JSON directly into this function.仅当我将TagList直接包含在 HTML 页面中并将 JSON 直接呈现到此函数中时，它才有效。
How can I access the tags field in a separate js file in a Angular controller?如何访问 Angular 控制器中单独 js 文件中的tags字段？
1 个解决方案
解决方案1
11 2013-03-07 15:46:51
There are at least two ways:至少有两种方式：
- Declare your
tagsarray in a standalone script tags, in which case yourtagsvariable will be bound to window object.在独立脚本标签中声明tags数组，在这种情况下，tags变量将绑定到窗口对象。 Inject $window into your controller to access your window-bound variables.将 $window 注入您的控制器以访问您的窗口绑定变量。 - Declare your
tagsarray inside theng-initdirective.在ng-init指令中声明你的tags数组。
Showing both solutions:显示两种解决方案：
HTML: HTML：
<body>
<script type="text/javascript" charset="utf-8">
var tags = [{"name": "some json"}];
</script>
<div ng-controller="AppController">
tags: {{tags | json}}
<ul>
<li ng-repeat="tag in tags">{{tag.name}}</li>
</ul>
</div>
<div>
<ul ng-init="tags = [{name: 'some json'}]">
<li ng-repeat="tag in tags">{{tag.name}}</li>
</ul>
</div>
</body>
JS: JS：
app.controller('AppController',
[
'$scope',
'$window',
function($scope, $window) {
$scope.tags = $window.tags;
}
]
);
I strongly advise against polluting window object.我强烈建议不要污染 window 对象。
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