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 JavaScript Basics Working with Strings Combine and Manipulate Strings

jonathan machuca
seal-mask
.a{fill-rule:evenodd;}techdegree
jonathan machuca
Full Stack JavaScript Techdegree Student 506 Points
Posted by jonathan machuca
.a{fill-rule:evenodd;}techdegree
jonathan machuca
Full Stack JavaScript Techdegree Student 506 Points

cannot read property "1" null

app.js 
let firstName = "jonathan" ;
let lastName = "machuca" ;
let role = 'developer';
let msg = firstName  + " " + lastName + ": "  role ;

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

Close! You just forgot the concatenation operator between the last literal string and the role:

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