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JavaScript JavaScript Basics Working with Strings Combine and Manipulate Strings

Michael Rushton
Michael Rushton
7,126 Points
Posted by Michael Rushton
Michael Rushton
7,126 Points

Convert to toUpperCase giving me an error cannot read property null? I can't work out what i have left out.

I think my code looks the same as the hints example but keep getting an error cannot read null or something like that.

app.js 
let firstName = 'Mike';
let lastName = 'Rush';
let role = 'developer';
let msg = (firstName + " " + lastName + ": "  + role);
let role = role.toUpperCase();

2 Answers

Jonathan Grieve
MOD
Jonathan Grieve
Treehouse Moderator 91,253 Points
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

I think it's because you're declaring let role a second time.

Simply call .toUpperCase() on the role variable where you've stored it in your msg string.

Darion Capers
Darion Capers
2,151 Points

Im having trouble here as well i keep getting errors