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JavaScript React Basics (2018) Understanding State Understanding State Review

Posted by Hanwen Zhang
Hanwen Zhang
20,084 Points

Please help with the answer of this question,

Complete the code so that the isConfirmed state updates its value based on the previous state.

confirmGuest = () => { this.setState( prevState => ({ isConfirmed: !___.isConfirmed })); }

Joe Elliot
Joe Elliot
5,330 Points
Joe Elliot
Joe Elliot
5,330 Points

I also had difficulty with this question. The answer is prevState

What it's doing is asking you to update the state of isConfirmed. The value is a Boolean, so it needs to flip the Boolean value of isConfirmed with the ! operator.