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 trial

JavaScript

Posted by Mohammed Esak
Mohammed Esak
3,574 Points

JavaScript basics Challenge.

Bummer: Cannot read property '1' of null
I keep getting that error. The question is :Below role, create a new variable named msg that combines the firstName, lastName and role variables to create a string like "Carlos Salgado: developer".

My answer is :

let firstName = "Mohammed"; let lastName = "Esak"; let role = 'developer';

let msg = firstName " " + lastName ":" + role;

1 Answer

Steven Parker
Steven Parker
241,970 Points
Steven Parker
Steven Parker
241,970 Points

A strange error message! But the issue is some missing symbols in the concatenation:

let msg = firstName " " + lastName ":" + role;       // as originally posted
let msg = firstName + " " + lastName + ": " + role;  // fixed
Mohammed Esak
Mohammed Esak
3,574 Points

Thanks so much. This really helps !

Steven Parker
Steven Parker
241,970 Points
Steven Parker
Steven Parker
241,970 Points

Mohammed Esak — Glad to help. You can mark a question solved by choosing a "best answer".
And happy coding!