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  • hao wang thinks this is interesting:

ng-controller. This directive allows us to associate an instance of a controller with a UI element (in this case, the body tag).

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Cover of AngularJS: Up and Running

Note

ng-controller 这个指令会把一个控制器的实例与一个 UI 元素相关到一起。这里就是这个 body 标签。