mode_edit codeAPI / @angular/commonNgLocalizationlinkclass 试验性的abstract class NgLocalization { abstract getPluralCategory(value: any, locale?: string): string }子类link NgLocaleLocalization 方法linkgetPluralCategory() linkmode_edit codeabstract getPluralCategory(value: any, locale?: string): string参数valueType: any.localeType: string.可选. 默认值是 undefined.返回值string