Question

Hi all just wondering why the following code results in NaN?

function multiply(num1,num2){
    var total = num1 * num2;
    return total;
}

var numbers = Array(10,2);
var results = multiply(numbers);
alert (results);

Thanks

Answer 1

You’re only passing one argument to multiply. Inside the function num1 is an array and num2 is undefined.

What you want to do is this,

var result = multiply(numbers[0], numbers[1]);