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JavaScript JavaScript Basics Working with Strings Combine and Manipulate Strings

sanket pureddiwar
sanket pureddiwar
3,832 Points
Posted by sanket pureddiwar
sanket pureddiwar
3,832 Points

how to fix cannot read property '1' of null?

I am not able to get the output

app.js 
let firstName = "Sanket";
let lastName = "Reddy";
let role = 'developer';

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

2 Answers

Dimitar Dimitrov
Dimitar Dimitrov
11,800 Points
Dimitar Dimitrov
Dimitar Dimitrov
11,800 Points

You don't need to reassign the role variable and you have declared msg twice which is kinda wrong. Just use toUpperCase() in the string concatenation like this : 

let firstName = "Sanket";
let lastName = "Reddy";
let role = 'developer';

let msg =  firstName + " " + lastName + ": " + role.toUpperCase();
sanket pureddiwar
sanket pureddiwar
3,832 Points
sanket pureddiwar
sanket pureddiwar
3,832 Points

cool thanks for the answer will use it