^^ I agree with this. I’d also note you probably want to use PureComponent when you optimize instead of manually writing shouldComponentUpdate. Then verify with React DevTools (“highlight updates” checkbox) and Performance tab in Chrome (“User Timing” section) that the components don’t re-render anymore. Because the worst thing you can do is to add a shouldComponentUpdate but not verify that it actually bails out when expected.
^^ I agree with this. I’d also note you probably want to use
PureComponentwhen you optimize instead of manually writingshouldComponentUpdate. Then verify with React DevTools (“highlight updates” checkbox) and Performance tab in Chrome (“User Timing” section) that the components don’t re-render anymore. Because the worst thing you can do is to add ashouldComponentUpdatebut not verify that it actually bails out when expected.Thank you for your answer Dan. I am definitely going to consider using PureComponent instead of shouldComponentUpdate, if I need it of course.