10.3.1--How many languages are there in the countries object file.

[swati-jagtap]

const countries = [
    {
      name: 'Afghanistan',
      capital: 'Kabul',
      languages: ['Pashto', 'Uzbek', 'Turkmen'],
      population: 27657145,
      flag: 'https://restcountries.eu/data/afg.svg',
      currency: 'Afghan afghani'
    },
    {
      name: 'Åland Islands',
      capital: 'Mariehamn',
      languages: ['Swedish'],
      population: 28875,
      flag: 'https://restcountries.eu/data/ala.svg',
      currency: 'Euro'
    },
    {
      name: 'Albania',
      capital: 'Tirana',
      languages: ['Albanian'],
      population: 2886026,
      flag: 'https://restcountries.eu/data/alb.svg',
      currency: 'Albanian lek'
    },
    {
      name: 'Algeria',
      capital: 'Algiers',
      languages: ['Arabic'],
      population: 40400000,
      flag: 'https://restcountries.eu/data/dza.svg',
      currency: 'Algerian dinar'
    },
    {
      name: 'American Samoa',
      capital: 'Pago Pago',
      languages: ['English', 'Samoan'],
      population: 57100,
      flag: 'https://restcountries.eu/data/asm.svg',
      currency: 'United State Dollar'
    },
    {
      name: 'Andorra',
      capital: 'Andorra la Vella',
      languages: ['Catalan'],
      population: 78014,
      flag: 'https://restcountries.eu/data/and.svg',
      currency: 'Euro'
    },
    {
      name: 'Angola',
      capital: 'Luanda',
      languages: ['Portuguese'],
      population: 25868000,
      flag: 'https://restcountries.eu/data/ago.svg',
      currency: 'Angolan kwanza'
    },
    {
      name: 'Anguilla',
      capital: 'The Valley',
      languages: ['English'],
      population: 13452,
      flag: 'https://restcountries.eu/data/aia.svg',
      currency: 'East Caribbean dollar'
    },
    {
      name: 'Antarctica',
      capital: '',
      languages: ['English', 'Russian'],
      population: 1000,
      flag: 'https://restcountries.eu/data/ata.svg',
      currency: 'Australian dollar'
    },
    {
      name: 'Antigua and Barbuda',
      capital: "Saint John's",
      languages: ['English'],
      population: 86295,
      flag: 'https://restcountries.eu/data/atg.svg',
      currency: 'East Caribbean dollar'
    },
    {
      name: 'Argentina',
      capital: 'Buenos Aires',
      languages: ['Spanish', 'Guaraní'],
      population: 43590400,
      flag: 'https://restcountries.eu/data/arg.svg',
      currency: 'Argentine peso'
    },
    {
      name: 'Armenia',
      capital: 'Yerevan',
      languages: ['Armenian', 'Russian'],
      population: 2994400,
      flag: 'https://restcountries.eu/data/arm.svg',
      currency: 'Armenian dram'
    }
]

//10.3.1--How many languages are there in the countries object file.
const lang=countries.map((prop)=>prop["languages"])
const languagesA=(lang.join(",").split(","))
//console.log(languagesA)       //all languages
const langCount=new Set(languagesA);
console.log(langCount,"are the languages in counntries object")   //unique lang set
console.log(langCount.size,"Countries Are there in Countries object")