Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript JavaScript Basics (Retired) Creating Reusable Code with Functions Create a max() Function

Solving Functions JavaScript Challenge

Here is the question: Create a new function named max which accepts two numbers as arguments (you can name the arguments, whatever you would like). The function should return the larger of the two numbers.

HINT: You'll need to use a conditional statement to test the 2 parameters to see which is the larger of the two.

Here is my solution

function max (7,4) {
  var biggerNumber = Math.max(7,4);
  return biggerNumber;
}

I can't figure what I did wrong. Can you point me to the right direction?

script.js
function max (7,4) {
  var biggerNumber = Math.max(7,4);
  return biggerNumber;
}

3 Answers

Steven Parker
Steven Parker
216,135 Points

You need names for your arguments.

When you define a function, you provide names to serve as placeholders for the actual arguments that will be used when the function is called. later. The names can be any legal variable names (but not numbers).

So instead of:

function max (7,4) {

You might write:

function max(first, second) {

Also, it might pass, but it's "cheating" to call the built-in max function. :open_mouth: I think you're supposed to create your own without calling any external functions.

Solved it. Thanks!

Ryan Rankin
Ryan Rankin
8,261 Points

So in this challenge you're asked to pass two numbers as arguments. The numbers will be determined later outside of the function when called. This way at a later time you can apply 2 different numbers to compare instead of your way where you will always be comparing 4 and 7. Also in order to compare the arguments the challenge is asking you to use a conditional statement.

This is my solution...

function max (num1, num2) {
  if (num1 > num2) {
    return num1;
  } else {
    return num2
  }
}

max(5,7);