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

Posted by Max Milner
Max Milner
4,098 Points

It says it can't find "variable numberA" and I don't know what it means.

I don't even have a variable, let alone one called numberA, so I'm not sure what I'm doing wrong.

script.js 
function max( numberA, numberB) { 
  if ( numberA >= numberB) {
    return numberA;
  } else if (numberA <= numberB)
    return numberB;
}
max(numberA, numberB);
alert(Math.random(numberA, numberB));

2 Answers

Heidi Puk Hermann
Heidi Puk Hermann
33,366 Points
Heidi Puk Hermann
Heidi Puk Hermann
33,366 Points

You define two variables in your function that you choose to call numberA and numberB. When you call your function, you need to provide the actual values, not their names. An example could be:

max(1,2);

In this case numberA is set to 1 and numberB is set to 2. The max-function would return 2.

Heidi Puk Hermann
Heidi Puk Hermann
33,366 Points
Heidi Puk Hermann
Heidi Puk Hermann
33,366 Points

ohh... and you do not have to call the Math.random() inside the alert(). It was just used as an example in the exercise. In stead your should call your max() inside the alert.

alert(max(num1,num2));

where num1 and num2 are two numbers that you choose.

Adam N
Adam N
70,280 Points
Adam N
Adam N
70,280 Points
  • You're trying to pass the numberA variable to the function, but it does not exist in your program
  • You're supposed to pass the function call to alert. They only used Math.random() in the instructions as a way to show you that a func call can be passed to alert