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JavaScript JavaScript Basics Working with Strings Combine and Manipulate Strings

Posted by Rene Rodriguez
Rene Rodriguez
4,119 Points

I keep getting the error message 'Cannot read property '1' of null.'

I'm trying to convert the variable let role = "developer"; to upper case.

Chris Adams
.a{fill-rule:evenodd;}techdegree seal-36
Chris Adams
Front End Web Development Techdegree Graduate 29,423 Points

Hey Rene,

Can we see a snippet of the code you're trying to run? What approach are you taking to convert role to upper case?

The MDN docs may help here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toUpperCase

Let's see how you're approaching the task, and we can work from there.

Chris

2 Answers

Peter Vann
Peter Vann
36,427 Points
Peter Vann
Peter Vann
36,427 Points

Hi Rene!

This passes all three:

let firstName = 'Rene';
let lastName = 'Rodriguez';
let role = 'developer';

let msg = firstName + " " + lastName + ": " + role.toUpperCase();

// This passes as well:
// let msg = `${firstNamez} ${lastName}: ${role.toUpperCase()}`;

I hope that helps.

Stay safe and happy coding!

Rene Rodriguez
Rene Rodriguez
4,119 Points
Rene Rodriguez
Rene Rodriguez
4,119 Points

Thanks Peter, I was able to figure it out. I was forgetting to put the colon in quotes.