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JavaScript JavaScript Basics Working with Strings Combine and Manipulate Strings

Cannot read property '1' of null

I don't know what is what I'm doing wrong

app.js
let firstName;
let lastName;
let role = 'developer';

firstName = "Enrique";
lastName = "Gimenez Vera";

let msg= firstName + ' ' + lastName ',' + role ;

2 Answers

Steven Parker
Steven Parker
216,013 Points

I don't quite understand that message, but there is a concatenation operator ("+") missing between "lastName" and the string following it.

Once of you fix that, the challenge will remind you that you need a different separator (": " instead of ",").

You are missing a + after lastName here:

let msg= firstName + ' ' + lastName ',' + role ;

In addition to this check your final string to see if it matches the format in the instructions

Thank you!