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JavaScript JavaScript Basics Working with Strings Combine and Manipulate Strings

Posted by Anna Moreno
Anna Moreno
4,331 Points

Can't Upper Case my string

I can't done that my finale concatenation have a upper case word like this one: "Carlos Salgado: DEVELOPER".

app.js 
let firstName = "Anna";
let lastName = "Moreno";
let role = 'developer';

let role = role.toUpperCase();

let msg = firstName + ' ' + lastName + ':' + role + '.';

2 Answers

Rabin Gharti Magar
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Rabin Gharti Magar
Front End Web Development Techdegree Graduate 20,928 Points

Hey Anna Moreno,

You need to create a new variable because when you try to modify role variable it gives you an error message saying The original string stored in the role should not be modified.

Here, I have created a new variable named roleUpper and inside this, I stored role and applied a toUpperCase() method to capitalize the string. And inside msg remove the role var and replace it by roleUpper.

Here's the final code:

let firstName = "Anna";
let lastName = "Moreno";
let role = 'developer';

let roleUpper = role.toUpperCase();

let msg = firstName + ' ' + lastName + ': ' + roleUpper;

Hope this helps!

Unsubscribed User
seal-mask
.a{fill-rule:evenodd;}techdegree
Unsubscribed User
Front End Web Development Techdegree Student 33,900 Points
Unsubscribed User
.a{fill-rule:evenodd;}techdegree
Unsubscribed User
Front End Web Development Techdegree Student 33,900 Points

Hi Anna,

the method does not work because you used a "let" before "role".

This creates the error "Uncaught SyntaxError: Identifier 'role' has already been declared".

You only use "let" when you declare the variable. Thereafter only use the name of the variable.

So just delete the "let" and you will be fine...

Makes sense?

Happy coding, Nils

PS: If this helped you and answered your question, you can mark my answer as "best answer" so other people see directly that the question was answered.

Anna Moreno
Anna Moreno
4,331 Points

Hi Nils,

thank you for the answer. I understood what you mentioned. But actually it didn't help with the exercise, I can't understand why. :( The exercise take as good one the rabin answer.