// function to check if the coupon is valid for a specific price plan function isCouponValidForPlan(couponCode, pricePlanId) { let coupons = [ { code: "PROMO1", validFor: ["pro", "Budget"], }, ];
let selectedCoupon = coupons.find((coupon) => coupon.code === couponCode); if (!selectedCoupon) { return false; }
return selectedCoupon.validFor.includes(pricePlanId); }
// example usage let couponCode = "PROMO1"; let pricePlanId = "pro"; let isValid = isCouponValidForPlan(couponCode, pricePlanId);
if (isValid) { // coupon is valid for the selected price plan // apply the coupon to the order } else { // coupon is not valid for the selected price plan // show an error message to the user }
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