JSAPI reference
jsid_is_empty jsid_is_string jsid_to_string interned_string_to_jsid added in spidermonkey 38 jsid_to_flat_string added in spidermonkey 17 jsid_is_int jsid_to_int int_fits_in_jsid int_to_jsid jsid_is_symbol added in spidermonkey 38 jsid_to_symbol added in spidermonkey 38 symbol_to_jsid added in spidermonkey 38 jsid_is_gcthing jsid_to_gcthing jsid_is_object obsolete since jsapi 33 jsid_is_default_xml_namespace obsolete since jsapi 21 classes these api features are used to define custom classes—object types that are implemented in c/c++ code but accessible from javascript.