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JavaScript Treehouse Club: JavaScript Car Sounds What's JavaScript?

Théo Leimer
Théo Leimer
2,103 Points
Posted by Théo Leimer
Théo Leimer
2,103 Points

Hey, I was confused on what the () was used for in a javascript function like function startcar()

Can anyone clarify this for me?

1 Answer

Theo VOGLIMACCI
Theo VOGLIMACCI
8,027 Points
Theo VOGLIMACCI
Theo VOGLIMACCI
8,027 Points

Hello Théo!

That's just how we declare a function in javascript. When you'll built more complex ones, you'll place the arguments inside the parentheses.

function addTwoNumbers(a, b) {
let result = a + b;
return result;
}

When you'll call the function you'll write 

addTwoNumbers(3,4)

and it will return you 7 ;-)

In this case, there are no arguments in the function so we type nothing in it!

That's just that simple.

Darren Maguire
Darren Maguire
2,009 Points

Nice response Theo. I just also want to say to the OP that this course is really just an introductory course to some of the aspects of Web Development. This is a great start for any newbie as it covers some networking, web-based development & whatever else is yet to come.

That being said, when you cover a Javascript module on Treehouse that is 6-8 hours long you'll definitely learn of passing parameters (As Theo has demonstrated above), functions & a whole lot more in great detail.