Document Object ModelElementインスタンスプロパティariaAtomicariaAutoCompleteariaBrailleLabel (en-US)ariaBrailleRoleDescription (en-US)ariaBusyariaCheckedariaColCountariaColIndexariaColIndexText (en-US) Experimental ariaColSpanariaCurrentariaDescriptionariaDisabledariaExpandedariaHasPopupariaHiddenariaKeyShortcutsariaLabelariaLevelariaLiveariaModalariaMultiLineariaMultiSelectableariaOrientationariaPlaceholder