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Start your free trialKhumoyunmirzo Nosirov
8,689 PointsI am totally stuck with these challenges, please can anyone help me?
phoneNumbers is array of 10 digit phone numbers, where the first three digits, in parentheses, are area codes. Using reduce, return the total phone numbers with a 503 area code. Store the total in the variable numberOf503.
const phoneNumbers = ["(503) 123-4567", "(646) 123-4567", "(503) 987-6543", "(503) 234-5678", "(212) 123-4567", "(416) 123-4567"];
let numberOf503 = phoneNumbers.reduce((allN , number) => );
// numberOf503 should be: 3
// Write your code below
5 Answers
Lester Rumbidzayi Tsuro
15,397 PointsnumberOf503 = phoneNumbers.reduce((ruu, lessie) => { if (lessie.substring(1, 4) === "503") { return ruu + 1; } else { return ruu; } }, 0);
console.log(numberOf503);console.log(numberOf503);
Lester Rumbidzayi Tsuro
15,397 Pointsyour code should look like this:
numberOf503 = phoneNumbers.reduce((ruu, lessie) => { if (lessie.substring(1, 4) === "503") { return ruu + 1; } else { return ruu; } }, 0);
console.log(numberOf503);console.log(numberOf503);
make sure you arrange your code properly
Lester Rumbidzayi Tsuro
15,397 Pointsthe curly brace and the if statement should be in the next line so is the return and the else statement ARRANGE YOUR CODE PROPERLY...IT WORKED FOR ME,TRY IT AND TELL ME HOW IT GOES
Khumoyunmirzo Nosirov
8,689 Pointsconst phoneNumbers = ["(503) 123-4567", "(646) 123-4567", "(503) 987-6543", "(503) 234-5678", "(212) 123-4567", "(416) 123-4567"]; let numberOf503 = phoneNumbers.reduce((ruu, lessie) => { if (lessie.substring(1, 4) === "503"){ return ruu + 1; } else { return ruu;
} }, 0);
Khumoyunmirzo Nosirov
8,689 PointsIt shows this:Bummer: It looks like you changed or removed the provided code. You can hit "Restart" if you want to start over.
Lester Rumbidzayi Tsuro
15,397 PointsDEAR JUST REPLACE ruu WITH allN AND lessie WITH number
Khumoyunmirzo Nosirov
8,689 Pointsmy dear , I did that . can you please send your code that worked?, it is not working for me const phoneNumbers = ["(503) 123-4567", "(646) 123-4567", "(503) 987-6543", "(503) 234-5678", "(212) 123-4567", "(416) 123-4567"]; let numberOf503 = phoneNumbers.reduce((allN, number) => { if (allN.substring(1, 4) === "503"){ return number + 1; } else { return number;
} }, 0);
Khumoyunmirzo Nosirov
8,689 PointsKhumoyunmirzo Nosirov
8,689 Pointsconst phoneNumbers = ["(503) 123-4567", "(646) 123-4567", "(503) 987-6543", "(503) 234-5678", "(212) 123-4567", "(416) 123-4567"]; let numberOf503 = phoneNumbers.reduce((ruu, lessie) => { if (lessie.substring(1, 4) === "503") { return ruu + 1; } else { return ruu; } }, 0);
it didn't work