In JavaScript doing a simple shipping and handling calculation

Question

I am having trouble with a simple JavaScript calculation. My document is supposed to add $1.50 to an order if it is $25 or less, or add 10% of the order if it is more then $

Answer 1

A bit of redundant multiplication, but your problem is that the numbers that are being inputted are treated as strings, not numbers. You have to convert them to floating point numbers:

var price = parseFloat(window.prompt("What is the purchase price?", 0));
var shipping = calculateShipping(price);
var total = price + shipping;

function calculateShipping(price)
{
  if (price <= 25)
  {
   return 1.5;
  } else {
    return price / 10
  }
}

window.alert("Your total is $" + total + ".");