Я сделал для вас небольшой рефакторинг и поместил регистр по умолчанию в ваш оператор switch и case
const states = ['Alabama', 'Alaska', 'Arizona', 'Arkansas', 'California', 'Colorado', 'Connecticut', 'Delaware', 'Florida', 'Georgia', 'Hawaii', 'Idaho', 'Illinois', 'Indiana', 'Iowa', 'Kansas', 'Kentucky', 'Louisiana', 'Maine', 'Maryland', 'Massachusetts', 'Michigan', 'Minnesota', 'Mississippi', 'Missouri', 'Montana', 'Nebraska', 'Nevada', 'New Hampshire', 'New Jersey', 'New Mexico', 'New York', 'North Carolina', 'North Dakota', 'Ohio', 'Oklahoma', 'Oregon', 'Pennsylvania', 'Rhode Island', 'South Carolina', 'South Dakota', 'Tennessee', 'Texas', 'Utah', 'Vermont', 'Virginia', 'Washington', 'West Virginia', 'Wisconsin', 'Wyoming'];
const cities = {
alabama: {
image: "state-images/alabama.jpg",
options: ["Tuscaloosa", "Montgomery", "Birmingham", "Huntsville"],
},
alaska: {
image: "state-images/alaska.jpg",
cities: ["Anchorage", "Fairbanks", "Juneau", "Nome"],
},
arizona: {
image: "state-images/arizona.jpg",
cities: ["Tuscon", "Scottsdale", "Yuma", "Phoenix"],
},
arkansas: {
image: "state-images/arkansas.jpg",
cities: ["Hot Springs", "Pine Bluff", "Little Rock", "Fayetteville"],
},
california: {
image: "state-images/california.jpg",
cities: ["Los Angeles", "San Diego", "Stockton", "Sacramento"],
},
colorado: {
image: "state-images/colorado.jpg",
cities: ["Denver", "Fort Collins", "Colorado Springs", "Pueblo"],
},
connecticut: {
image: "state-images/connecticut.jpg",
cities: ["New Haven", "Hartford", "Stamford", "Bridgeport"],
},
delaware: {
image: "state-images/delaware.jpg",
cities: ["Georgetown", "Milford", "Dover", "Harrington"],
},
florida: {
image: "state-images/florida.jpg",
cities: ["Miami", "Tallahassee", "Jacksonville", "St. Petersburg"],
},
georgia: {
image: "state-images/georgia.jpg",
cities: ["Atlanta", "Macon", "Albany", "Augusta"],
},
hawaii: {
image: "state-images/hawaii.jpg",
cities: ["Hilo", "Pearl City", "Honolulu", "Kailua"],
},
idaho: {
image: "state-images/idaho.jpg",
cities: ["Boise", "Idaho Falls", "Twin Falls", "Pocatello"],
},
illinois: {
image: "state-images/illinois.jpg",
cities: ["Chicago", "Peoria", "Decatur", "Springfield"],
},
indiana: {
image: "state-images/indiana.jpg",
cities: ["Bloomington", "Fort Wayne", "Indianapolis", "South Bend"],
},
iowa: {
image: "state-images/iowa.jpg",
cities: ["Cedar Rapids", "Des Moines", "Council Bluffs", "Waterloo"],
},
kansas: {
image: "state-images/kansas.jpg",
cities: ["Topeka", "Kansas City", "Wichita", "Manhattan"],
},
kentucky: {
image: "state-images/kentucky.jpg",
cities: ["Frankfort", "Lexington", "Louisville", "Bowling Green"],
},
louisiana: {
image: "state-images/louisiana.jpg",
cities: ["New Orleans", "Lafayette", "Baton Rouge", "Shreveport"],
},
maine: {
image: "state-images/maine.jpg",
cities: ["Portland", "Augusta", "Millinocket", "Portsmouth"],
},
maryland: {
image: "state-images/maryland.jpg",
cities: ["Baltimore", "Annapolis", "Salisbury", "Hagerstown"],
},
massachusetts: {
image: "state-images/massachusetts.jpg",
cities: ["Providence", "Lowell", "Worcester", "Boston"],
},
michigan: {
image: "state-images/michigan.jpg",
cities: ["Detriot", "Grand Rapids", "Lansing", "Saginaw"],
},
minnesota: {
image: "state-images/minnesota.jpg",
cities: ["Minneapolis", "St. Paul", "Duluth", "Moorhead"],
},
mississippi: {
image: "state-images/mississippi.jpg",
cities: ["Jackson", "Tupelo", "Hattiesburg", "Columbus"],
},
missouri: {
image: "state-images/missouri.jpg",
cities: ["St. Louis", "Jefferson City", "Springfield", "Independence"],
},
montana: {
image: "state-images/montana.jpg",
cities: ["Helena", "Bozeman", "Missoula", "Billings"],
},
nebraska: {
image: "state-images/nebraska.jpg",
cities: ["Omaha", "Bellevue", "North Platte", "Lincoln"],
},
nevada: {
image: "state-images/nevada.jpg",
cities: ["Reno", "Carson City", "Las Vegas", "Henderson"],
},
newHampshire: {
image: "state-images/new-hampshire.jpg",
cities: ["Concord", "Manchester", "Haverhill", "Littleton"],
},
newJersey: {
image: "state-images/new-jersey.jpg",
cities: ["Trenton", "Elizabeth", "Middleton", "Atlantic City"],
},
newMexico: {
image: "state-images/new-mexico.jpg",
cities: ["Roswell", "Santa Fe", "Albuquerque", "Carlsbad"],
},
newYork: {
image: "state-images/new-york.jpg",
cities: ["New York City", "Syracuse", "Albany", "Rochester"],
},
northCarolina: {
image: "state-images/north-carolina",
cities: ["Charlotte", "Raleigh", "Fayetteville", "Greensboro"],
},
northDakota: {
image: "state-images/north-dakota",
cities: ["Bismark", "Fargo", "Minot", "Williston"],
},
ohio: {
image: "state-images/ohio.jpg",
cities: ["Cincinnati", "Dayton", "Cleveland", "Columbus"],
},
oklahoma: {
image: "state-images/oklahoma.jpg",
cities: ["Tulsa", "Oklahoma City", "Norman", "Broken Arrow"],
},
oregon: {
image: "state-images/oregon.jpg",
cities: ["Portland", "Eugene", "Medford", "Salem"],
},
pennsylvania: {
image: "state-images/pennsylvania.jpg",
cities: ["Pittsburgh", "Philadelphia", "Harrisburg", "Scranton"],
},
rhodeIsland: {
image: "state-images/rhode-Island",
cities: ["Providence", "Warwick", "Kingston", "Woonsocket"],
},
southCarolina: {
image: "state-images/south-carolina.jpg",
cities: ["Spartanburg", "Greenville", "Columbia", "Charleston"],
},
southDakota: {
image: "state-images/south-dakota.jpg",
cities: ["Rapid City", "Sioux Falls", "Sturgis", "Pierre"],
},
tennessee: {
image: "state-images/tennessee",
cities: ["Nashville", "Memphis", "Knoxville", "Chattanooga"],
},
texas: {
image: "state-images/texas.jpg",
cities: ["Houston", "Dallas", "San Antonio", "Austin"],
},
utah: {
image: "state-images/utah.jpg",
cities: ["Salt Lake City", "Provo", "Ogden", "St. George"],
},
vermont: {
image: "state-images/vermont.jpg",
cities: ["Burlington", "Montpelier", "Rutland", "Newport"],
},
virginia: {
image: "state-images/virginia.jpg",
cities: ["Lynchburg", "Roanoke", "Richmond", "Norfolk"],
},
washington: {
image: "state-images/washington.jpg",
cities: ["Seattle", "Tacoma", "Spokane", "Olympia"],
},
westVirginia: {
image: "state-images/west-virginia",
cities: ["Parkersburg", "Morgantown", "Charleston", "Bluefield"],
},
wisconsin: {
image: "state-images/wisconsin.jpg",
cities: ["Milwaukee", "Madison", "Green Bay", "Superior"],
},
wyoming: {
image: "state-images/wyoming.jpg",
cities: ["Cheyenne", "Casper", "Gillette", "Jackson"],
},
};
const currentState = states[Math.floor(Math.random() * states.length)];
function getState() {
document.getElementById("activeState").innerHTML = currentState;
}
getState();
const setInnerHtml = city => {
document.getElementById("choice1").innerHTML = cities[city].options[0];
document.getElementById("choice2").innerHTML = cities[city].options[1];
document.getElementById("choice3").innerHTML = cities[bity].options[2];
document.getElementById("choice4").innerHTML = cities[city].options[3];
document.getElementById("stateImage").src = "state-images/alabama.jpg";
};
const setImage = city => {
document.getElementById("stateImage").src = `state-images/${city}.jpg`;
};
switch (currentState) {
case "Alabama":
setInnerHtml("alabama")
setImage("alabama")
break;
case "Alaska":
setInnerHtml("alaska")
setImage("alaska")
break;
case "Arizona":
setInnerHtml("arizona")
setImage("arizona")
break;
case "Arkansas":
setInnerHtml("arkansas")
setImage("arkansas")
break;
case "California":
setInnerHtml("california")
setImage("california")
break;
default:
console.log(`Current state is: ${currentState} and does not match any case!`);
}