Simulate click event on react element

I'm trying to simulate a .click() event on a React element but I can't figure out why it is not working (It's not reacting when I'm firing the event).

I would like to post a Facebook comment using only JavaScript but I'm stuck at the first step (do a .click() on div[class="UFIInputContainer"] element).

My code is:

document.querySelector('div[class="UFIInputContainer"]').click();

And here's the URL where I'm trying to do it: https://www.facebook.com/plugins/feedback.php...

P.S. I'm not experienced with React and I don't know really if this is technically possible. It's possible?

EDIT: I'm trying to do this from Chrome DevTools Console.

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