javascript - trigger('click') fails in react componentDidMount

Question

componentDidMount can get the real Dom, but trigger('click') still fails. Is there anyone who can solve it?

Answer 1

I tested input text, $('').focus is valid, but input file is invalid. The problem should be that the browser has security restrictions.
This is due to a security restriction.Most browsers prevent submitting files when the input field didn't receive a direct click or keyboard click event as a security precaution.