Message from JavaScript discussions

March 2019

— Console. Log gives an error cannot read property state of undefined can anyone explain?

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Hello. Can anyone explain the difference between Observable and Subject? When and what should I use?

— In RxJS.

— Again?

— I thought someone already answered you?

— Try this

— Now I just have a question. What is a right way to emit some value on click button, which is rendered by React?

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— I need to use an Observable or a Subject?

— For example, there is app with two screens - A and B. When I pressing button on screen A, some data is processing and screen B is showing. How to make it in pair with RxJS?

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— There was other, but similar question.

— You can find the answer from this link https://reactjs.org/docs/handling-events.html'

— Https://codesandbox.io/s/73zlzoywvj?fontsize=14