Why a button is clicked when a form is submitted?

Question

Say, I have a form with a text input and a submit button.

If there are no buttons in the form, just submit event triggers, but if there is at least one button with no ty

Answer 1

It actually doesn't automatically press the button, that isn't what's submitting the form. The form is being submitted because that's a default characteristic of text boxes - if you have focus in the text box, pressing the enter key will cause an attempt to submit the form. This article goes into a deeper explanation: https://www.tjvantoll.com/2013/01/01/enter-should-submit-forms-stop-messing-with-that/

EDIT: Actually, more specifically, a form will only submit on the enter key if: 1)A submit button exists in the form, or 2)The form only contains one text input

If neither of these conditions is true, then the enter key should not submit the form