Plurals

Plurals use the count argument. The JSON format version of the plural resolver decides about the suffixes. Version4 is the format of current i18next versions and uses the CLDR plural categories, Version3 is the default for compatibility with existing translation files.

{
    "item_zero": "No items",
    "item_one": "{{count}} item",
    "item_other": "{{count}} items",
    "place_ordinal_one": "{{count}}st place",
    "place_ordinal_two": "{{count}}nd place",
    "place_ordinal_few": "{{count}}rd place",
    "place_ordinal_other": "{{count}}th place"
}

i18n.T("item", new { count = 0 });                    // No items
i18n.T("item", new { count = 1 });                    // 1 item
i18n.T("item", new { count = 5 });                    // 5 items
i18n.T("place", new { count = 22, ordinal = true });  // 22nd place

Format	Example keys
Version1	key, key_plural, key_plural_2, key_plural_5
Version2	key, key_plural, key_1, key_2, key_5
Version3	key, key_plural, key_0, key_1, key_2
Version4	key_zero, key_one, key_two, key_few, key_many, key_other, key_ordinal_one

The rules of all 224 CLDR languages for cardinals and 108 for ordinals are included and verified against the CLDR samples.

Plural resolver

DefaultPluralResolver implements the CLDR cardinal and ordinal rules of all languages. JsonFormatVersion selects the key suffixes (Version1 to Version4, see Plurals), UseSimplePluralSuffixIfPossible controls the _plural suffix of the older formats.