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JavaScript Returning null from setState

Posted by Ramsés Del Rosario
Ramsés Del Rosario
3,333 Points

Why didn't make use of the prevState prop from the setState function?

I saw that Guil declared a previous state const, I was wondering why he didn't rather use the prevState prop that comes with the setState function instead of declaring and assigning a const the previous value?

Jonathan Mazala
Jonathan Mazala
9,860 Points

i honestly don't know. i didn't create the const.

1 Answer

Tanveer Ashraf
Tanveer Ashraf
1,621 Points
Tanveer Ashraf
Tanveer Ashraf
1,621 Points

I think he is using it with the name state instead of prevState.

this.setState(state => { if (state.teacher === newTeacher){ return null } })

the state object is actually handling previous state, and its our choice to name it according to our ease.