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

Luis Paulino
PLUS
Luis Paulino
Courses Plus Student 1,779 Points
Posted by Luis Paulino
Luis Paulino
Courses Plus Student 1,779 Points

What is my error?

I know I'm doing something wrong, but I don't know

script.js 
function max(5,8){
  if(8>5){
    return 8;
  }

2 Answers

Kourosh Raeen
Kourosh Raeen
23,733 Points
Kourosh Raeen
Kourosh Raeen
23,733 Points

Hi Luis - You need to use two arguments for your function instead of actual numbers like 8 and 5. You want this function to work for any two numbers passed to it and not just for those two numbers. So in your function definition change the arguments to something like num1 and num2 and modify the if statement accordingly.

Jacob Mishkin
Jacob Mishkin
23,118 Points
Jacob Mishkin
Jacob Mishkin
23,118 Points

An argument in context with functions is the actual value that is passed to the function ( as input) ,when it is called. However parameter refers to the variables that are used in the function declaration/definition to represent those arguments that were send to the function during the function call.

example:

//while defining the function you use parameters or variables
function max(a,b){ 
if(a < b){
return b
}
};

//here you use arguments, or real data when calling the function. 
max(3,7);

I hope this helps.

Kourosh Raeen
Kourosh Raeen
23,733 Points
Kourosh Raeen
Kourosh Raeen
23,733 Points

Hi Jacob - Your code doesn't work correctly when a is greater than b.

Steven Parker
Steven Parker
231,109 Points
Steven Parker
Steven Parker
231,109 Points

You forgot that you still need to return the other value when the test condition is false.

Jacob Mishkin
Jacob Mishkin
23,118 Points

I'm not writing this to give the answer away, Yes, that is correct. The conditional statement reads if a is less than b return b. I did not write an else statement saying else return a. The goal of my post is to explain what are/when to use parameters and arguments. I'm not a huge fan of giving the answer away, but more interested in helping with what the root issue of the question is, in this case its parameters and arguments. I do apologize if I created any confusion.