Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript JavaScript Array Iteration Methods Array Manipulation Practice reduce()

.return

How can I complete this task ? Thanks!

app.js
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 = phoneNumbers.reduce( number => {
  if(number === charAt(503){
        return numberOf503;
     }

})
Reggie Williams
seal-mask
.a{fill-rule:evenodd;}techdegree
Reggie Williams
Treehouse Teacher

Hey Azzie Fuzzie the charAt method will return the characters at a given index. It looks like you're attempting to check if the numbers start with 503 using the charAt() method. Try instead using a method like substring then inside your return statement, make sure you return number instead of numberOf503

1 Answer

Thanks