Question on React Challenges

1

Hey,

I’m moving my way through the FCC alpha challenges of React in order to learn the path for the Data Vis Projects. I was just wondering if someone could explain in greater detail why it is good practice to add a remove event listener and in component will unmount? I just don’t see why you would need to.

2

Stops memory leaks, decreases processor overhead and frees up threads. In short, snappier pages, and (if React isn’t quick enough with the garbage collection), avoids browser crashes.