onClick not working when I attempt to change value of variable

In React, I’m attempting to change the display of 2 elements when certain buttons are clicked on. I either want the title displayed, or an input to edit the title. My title div has a className of a variable named ‘titleDisplay’ with the value of ‘isDisplayed’. I have a function set up to switch it to ‘notDisplayed’

Display DIV’s on Click

I have 2 div elements, and I want to add something on the Div 2 that when I Click on that Div, it will Display Div 1, so both DIV’s will be visible when clicking Div 2!
Div 2 should remain visible all the time, but when I click on DIV 2, it should display Div 1!