javascript - Why can't the submit event be triggered here?

Question

Nothing happens when I click the Button, it feels right

Answer 1

Only form has submit event

Answer 2

Submit can only be triggered when it is written in the form. What he submitted is the form

Answer 3

1. If you use it this way, you need to add a <form></form> tag externally. You can activate submit by pressing Enter, and there is no need to write js.

2. If you don’t want to add a layer of <form></form> tags, then you can listen to the onclick event of the button.