1. htmlselectelement api

2. htmlselectelement api: add

3. htmlselectelement api: add: index as `before` parameter

4. htmlselectelement api: autocomplete

5. htmlselectelement api: checkvalidity

6. htmlselectelement api: disabled

7. htmlselectelement api: form

8. htmlselectelement api: item

9. htmlselectelement api: labels

10. htmlselectelement api: length

11. htmlselectelement api: multiple

12. htmlselectelement api: name

13. htmlselectelement api: nameditem

14. htmlselectelement api: options

15. htmlselectelement api: remove

16. htmlselectelement api: reportvalidity

17. htmlselectelement api: required

18. htmlselectelement api: selectedindex

19. htmlselectelement api: selectedoptions

20. htmlselectelement api: setcustomvalidity

21. htmlselectelement api: showpicker

22. htmlselectelement api: size

23. htmlselectelement api: type

24. htmlselectelement api: validationmessage

25. htmlselectelement api: validity

26. htmlselectelement api: value

27. htmlselectelement api: willvalidate