How do I make the first letter of a string uppercase in JavaScript?

Question

How do I make the first letter of a string uppercase, but not change the case of any of the other letters?

For example:

• \"this is a test\"

Answer 1

Only because this is really a one liner I will include this answer. It's an ES6 based interpolated string one liner.

let setStringName = 'the Eiffel Tower';
setStringName = `${setStringName[0].toUpperCase()}${setStringName.substring(1)}`;