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JavaScript React Basics (retired) Component Lifecycle Making the Stopwatch Tick

Posted by Tuan Minh
Tuan Minh
6,129 Points

why component will unmount function is declare in here?

why component will unmount function is declare in here?

1 Answer

Pedro Esteves
Pedro Esteves
13,125 Points
Pedro Esteves
Pedro Esteves
13,125 Points

In this case it doesn't do anything, because we aren't removing the stopwatch from the virtual DOM. If we were we should use the unmount function in order to stop the setInterval function that would be taking up memory for no reason.