Angular2: child component access parent class variable/function

Question

I have a variable in the parent component that might be changed by child, parent will be using this variable in the view and thus has to propagate changes.

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Answer 1

Basically you can't access variables from parent directly. You do this by events. Component's output property is responsible for this. I would suggest reading https://angular.io/docs/ts/latest/guide/template-syntax.html#input-and-output-properties