Implement form element pointer

manakai-core / Whatpm / manakai-charlib / CharClass / WebHACC / Harusame / regexp

Implement form element pointer - TODO

[Good Job!]

Good Job!wakabatanwakabatan 『We does not implement |form| IDL attribute yet.』

Good Job!wakabatanwakabatan 『See also: <http://suika.fam.cx/%7Ewakaba/wiki/sw/n/form%E8%A6%81%E7%B4%A0%E6%8C%87%E7%A4%BA%E5%AD%90>』