Fix #309 -- handle submit buttons form* attributes

[gary02]

Since form.submit API does not accept any arguments, we have to mutate form object.

[codingjoe]

Thanks @gary02, this looks like an excellent start. Feel free to use Baseline2023 features, like let and const. This script hasn't been updated in a while, but there is no need to stick to ages old JS code ;)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.37%. Comparing base (ee86db1) to head (9d41028).
Report is 16 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (ee86db1) and HEAD (9d41028). Click for more details.

HEAD has 8 uploads less than BASE

Flag	BASE (ee86db1)	HEAD (9d41028)
	9	1

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #310       +/-   ##
===========================================
- Coverage   98.03%   81.37%   -16.67%     
===========================================
  Files           8        8               
  Lines         204      204               
===========================================
- Hits          200      166       -34     
- Misses          4       38       +34     

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[codingjoe]

Hi @gary02,

I actually invested some time to update this package to 2024 baseline features. Resulting in much less code, which in turns is also better testable.

I have a draft in #311. It should resolve your problem, since we simply resubmit the form with the same submitter.

[gary02]

@codingjoe Great work! I close this PR