useCallback | Simple React Hooks

How useCallback works in React #usecallback #react #reactjs #reactjsdeveloper #programming #progammer #frontend #coding #code

[philipmwangi]

well, continue doing this concise explanatory videos. Thanks

[bruamado]

When the onChange is being called?
I mean.. You passed as a prop, but didnt trigged it inside Item component.
Could you please explain me?

[mohasinkr]

what does the empty curly braces {} in Item component mean...seems like a new pattern

[Nelsonm]

Thanks, does useCallback have to be used in conjunction with React.memo(Child) to make sure Child doesn't re-render unnecessarily?

So useCallback memoizes value for parent component, and React.memo prevents child component from re-rendering when not needed?

[MrJeszam]

Thats why I dont like ReactJS... it always re-rendered issue. Unlike Angular

[molviwithskills]

It's a lot confusing when u r using onChange as Props, u could also make it whenChanges instead of onChange.