Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trialJoseph Chauvin
Full Stack JavaScript Techdegree Student 12,029 PointsThe correct result is stored in `numberOf503` but `reduce` was not used.
But I did use reduce()......
const phoneNumbers = ["(503) 123-4567", "(646) 123-4567", "(503) 987-6543", "(503) 234-5678", "(212) 123-4567", "(416) 123-4567"];
let numberOf503;
// numberOf503 should be: 3
// Write your code below
numberOf503 = 0;
phoneNumbers.reduce( (accum, phone) => {
if (/(503)\w*/.test(phone)) {
numberOf503 += 1;
return numberOf503;
}
return numberOf503;
}, 0);
1 Answer
KRIS NIKOLAISEN
54,971 PointsI think it's referring to not assigning the return value of reduce to numberOf503, as in:
numberOf503 = phoneNumbers.reduce( (accum, phone) => {
if (/(503)\w*/.test(phone)) {
accum += 1;
return accum;
}
return accum;
}, 0);
Joseph Chauvin
Full Stack JavaScript Techdegree Student 12,029 PointsJoseph Chauvin
Full Stack JavaScript Techdegree Student 12,029 PointsThank you!