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document.addEventListener("DOMContentLoaded", function(){
const color = document.querySelector('[name="form_fields[desk_color]"]');
const motor = document.querySelector('[name="form_fields[desk_motor]"]');
const price = document.getElementById("price");
function calculate(){
let base = 500;
let extra = 0;
if(color.value === "black") extra += 50;
if(color.value === "walnut") extra += 100;
if(motor.value === "pro") extra += 200;
price.innerText = "$" + (base + extra);
}
color.addEventListener("change", calculate);
motor.addEventListener("change", calculate);
});
