How do I set the focus to the first input element in an HTML form independent from the id?

Question

Is there a simple way to set the focus (input cursor) of a web page on the first input element (textbox, dropdownlist, ...) on loading the

Answer 1

without jquery, e.g. with regular javascript:

document.querySelector('form input:not([type=hidden])').focus()

works on Safari but not Chrome 75 (april 2019)