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JavaScript JavaScript Basics Working with Strings Combine and Manipulate Strings

Jordan Branch
Jordan Branch
2,762 Points
Posted by Jordan Branch
Jordan Branch
2,762 Points

Cannot read property '1' of null

I do not fully understand what I'm doing wrong.

app.js 
let firstName = 'jordan';
let lastName = 'branch';
let role = 'developer';
let msg = firstName + " " + lastName + ": " + role;
let msg = firstName + " " + lastName + ": " + role.toUpperCase;

1 Answer

Steven Parker
Steven Parker
215,372 Points
Steven Parker
Steven Parker
215,372 Points

The hint isn't very helpful, but there are two issues here:

  • you should only declare a variable once (using "let")
  • when you call a function (like toUpperCase), you need parentheses after the name