A First Example

Before we try to define or create our own functions, let's see an example.

In the code editor, you'll find a function called getFirstLetter. It's very simple: you give it a string, and it gives you back the first character in the string.

Let's try using it. You can call (or invoke, run, execute) a function like this:

getFirstLetter("home run");

Of course, to see the result, you'll need to console.log it. (Fun fact: console.log is a function too!) Add this code to the editor and run it:

console.log(getFirstLetter("home run"));

Try calling the function with different strings. No matter what string you give it, it should return the first character.

Instead of console logging the result, you can store it in a variable:

let first = getFirstLetter("home run");
console.log(first);

Tests

To pass the tests, create a variable called firstLetter and set it equal to the result of calling getFirstLetter with the string "javascript".