<form> - mrsekut-p

<form>

https://qiita.com/mikuhonda/items/f3126380d3340f3d8a2b

action

https://developer.mozilla.org/ja/docs/Learn/Forms/Sending_and_retrieving_form_data

1つのformに複数のsubmitを付ける

https://simple-minds-think-alike.hatenablog.com/entry/html5-formaction-formmethod

https://developer.mozilla.org/ja/docs/Web/HTML/Element/Input/submit#additional_attributes

formaction

formmethod