index.js

let countries=[{name:"Afghanistan",code:"AF"},{name:"Albania",code:"AL"},{name:"Algeria",code:"DZ"},{name:"Andorra",code:"AD"},{name:"Angola",code:"AO"},{name:"Antigua and Barbuda",code:"AG"},{name:"Argentina",code:"AR"},{name:"Armenia",code:"AM"},{name:"Australia",code:"AU"},{name:"Austria",code:"AT"},{name:"Azerbaijan",code:"AZ"},{name:"Bahamas",code:"BS"},{name:"Bahrain",code:"BH"},{name:"Bangladesh",code:"BD"},{name:"Barbados",code:"BB"},{name:"Belarus",code:"BY"},{name:"Belgium",code:"BE"},{name:"Belize",code:"BZ"},{name:"Benin",code:"BJ"},{name:"Bhutan",code:"BT"},{name:"Bolivia",code:"BO"},{name:"Bosnia and Herzegovina",code:"BA"},{name:"Botswana",code:"BW"},{name:"Brazil",code:"BR"},{name:"Brunei",code:"BN"},{name:"Bulgaria",code:"BG"},{name:"Burkina Faso",code:"BF"},{name:"Burundi",code:"BI"},{name:"Cambodia",code:"KH"},{name:"Cameroon",code:"CM"},{name:"Canada",code:"CA"},{name:"Cabo Verde",code:"CV"},{name:"Central African Republic",code:"CF"},{name:"Chad",code:"TD"},{name:"Chile",code:"CL"},{name:"China",code:"CN"},{name:"Colombia",code:"CO"},{name:"Comoros",code:"KM"},{name:"Republic of the Congo",code:"CG"},{name:"Democratic Republic of the Congo",code:"CD"},{name:"Costa Rica",code:"CR"},{name:"Cote D'Ivoire",code:"CI"},{name:"Croatia",code:"HR"},{name:"Cuba",code:"CU"},{name:"Cyprus",code:"CY"},{name:"Czech Republic",code:"CZ"},{name:"Denmark",code:"DK"},{name:"Djibouti",code:"DJ"},{name:"Dominica",code:"DM"},{name:"Dominican Republic",code:"DO"},{name:"Ecuador",code:"EC"},{name:"Egypt",code:"EG"},{name:"El Salvador",code:"SV"},{name:"Equatorial Guinea",code:"GQ"},{name:"Eritrea",code:"ER"},{name:"Estonia",code:"EE"},{name:"Ethiopia",code:"ET"},{name:"Fiji",code:"FJ"},{name:"Finland",code:"FI"},{name:"France",code:"FR"},{name:"Gabon",code:"GA"},{name:"The Gambia",code:"GM"},{name:"Georgia",code:"GE"},{name:"Germany",code:"DE"},{name:"Ghana",code:"GH"},{name:"Greece",code:"GR"},{name:"Grenada",code:"GD"},{name:"Guatemala",code:"GT"},{name:"Guinea",code:"GN"},{name:"Guinea-Bissau",code:"GW"},{name:"Guyana",code:"GY"},{name:"Haiti",code:"HT"},{name:"Vatican City",code:"VA"},{name:"Honduras",code:"HN"},{name:"Hungary",code:"HU"},{name:"Iceland",code:"IS"},{name:"India",code:"IN"},{name:"Indonesia",code:"ID"},{name:"Iran",code:"IR"},{name:"Iraq",code:"IQ"},{name:"Ireland",code:"IE"},{name:"Israel",code:"IL"},{name:"Italy",code:"IT"},{name:"Jamaica",code:"JM"},{name:"Japan",code:"JP"},{name:"Jordan",code:"JO"},{name:"Kazakhstan",code:"KZ"},{name:"Kenya",code:"KE"},{name:"Kiribati",code:"KI"},{name:"North Korea",code:"KP"},{name:"South Korea",code:"KR"},{name:"Kuwait",code:"KW"},{name:"Kyrgyzstan",code:"KG"},{name:"Laos",code:"LA"},{name:"Latvia",code:"LV"},{name:"Lebanon",code:"LB"},{name:"Lesotho",code:"LS"},{name:"Liberia",code:"LR"},{name:"Libya",code:"LY"},{name:"Liechtenstein",code:"LI"},{name:"Lithuania",code:"LT"},{name:"Luxembourg",code:"LU"},{name:"North Macedonia",code:"MK"},{name:"Madagascar",code:"MG"},{name:"Malawi",code:"MW"},{name:"Malaysia",code:"MY"},{name:"Maldives",code:"MV"},{name:"Mali",code:"ML"},{name:"Malta",code:"MT"},{name:"Marshall Islands",code:"MH"},{name:"Mauritania",code:"MR"},{name:"Mauritius",code:"MU"},{name:"Mexico",code:"MX"},{name:"Federated States of Micronesia",code:"FM"},{name:"Moldova",code:"MD"},{name:"Monaco",code:"MC"},{name:"Mongolia",code:"MN"},{name:"Montenegro",code:"ME"},{name:"Morocco",code:"MA"},{name:"Mozambique",code:"MZ"},{name:"Myanmar",code:"MM"},{name:"Namibia",code:"NA"},{name:"Nauru",code:"NR"},{name:"Nepal",code:"NP"},{name:"Netherlands",code:"NL"},{name:"New Zealand",code:"NZ"},{name:"Nicaragua",code:"NI"},{name:"Niger",code:"NE"},{name:"Nigeria",code:"NG"},{name:"Norway",code:"NO"},{name:"Oman",code:"OM"},{name:"Pakistan",code:"PK"},{name:"Palau",code:"PW"},{name:"Panama",code:"PA"},{name:"Papua New Guinea",code:"PG"},{name:"Paraguay",code:"PY"},{name:"Peru",code:"PE"},{name:"Philippines",code:"PH"},{name:"Poland",code:"PL"},{name:"Portugal",code:"PT"},{name:"Qatar",code:"QA"},{name:"Romania",code:"RO"},{name:"Russia",code:"RU"},{name:"Rwanda",code:"RW"},{name:"Saint Kitts and Nevis",code:"KN"},{name:"Saint Lucia",code:"LC"},{name:"Saint Vincent and the Grenadines",code:"VC"},{name:"Samoa",code:"WS"},{name:"San Marino",code:"SM"},{name:"Sao Tome and Principe",code:"ST"},{name:"Saudi Arabia",code:"SA"},{name:"Senegal",code:"SN"},{name:"Serbia",code:"RS"},{name:"Seychelles",code:"SC"},{name:"Sierra Leone",code:"SL"},{name:"Singapore",code:"SG"},{name:"Slovakia",code:"SK"},{name:"Slovenia",code:"SI"},{name:"Solomon Islands",code:"SB"},{name:"Somalia",code:"SO"},{name:"South Africa",code:"ZA"},{name:"South Sudan",code:"SS"},{name:"Spain",code:"ES"},{name:"Sri Lanka",code:"LK"},{name:"Sudan",code:"SD"},{name:"Suriname",code:"SR"},{name:"Eswatini",code:"SZ"},{name:"Sweden",code:"SE"},{name:"Switzerland",code:"CH"},{name:"Syria",code:"SY"},{name:"Tajikistan",code:"TJ"},{name:"Tanzania",code:"TZ"},{name:"Thailand",code:"TH"},{name:"Timor-Leste",code:"TL"},{name:"Togo",code:"TG"},{name:"Tonga",code:"TO"},{name:"Trinidad and Tobago",code:"TT"},{name:"Tunisia",code:"TN"},{name:"Turkey",code:"TR"},{name:"Turkmenistan",code:"TM"},{name:"Tuvalu",code:"TV"},{name:"Uganda",code:"UG"},{name:"Ukraine",code:"UA"},{name:"United Arab Emirates",code:"AE"},{name:"United Kingdom",code:"GB"},{name:"United States",code:"US"},{name:"Uruguay",code:"UY"},{name:"Uzbekistan",code:"UZ"},{name:"Vanuatu",code:"VU"},{name:"Venezuela",code:"VE"},{name:"Vietnam",code:"VN"},{name:"Yemen",code:"YE"},{name:"Zambia",code:"ZM"},{name:"Zimbabwe",code:"ZW"}];
const randomFlag = () => {let x = countries[Math.floor(Math.random() * countries.length)]; return [x.name, `images/${x.code.toLowerCase()}.svg`]};
let answer;
function newFlag() {
  let randFlag = randomFlag();
  answer = randFlag[0];
  document.getElementById("flag").src= randFlag[1];
  document.getElementById("answer").innerHTML = "Reveal Answer";
}
function getAnswer() {
  document.getElementById("answer").innerHTML = answer;
}
newFlag();