how to make an order button to a buy now button.

hey there,
im developing a site that you can book field trips with, but i have a bug, when trying to order more then one trip (it is added to the cart at the moment you click order now), and then doing a check out, it books all of the cart items (booking items) into the last day i have booked for, for instance, i booked for the 12.5 and the 13.5 and they are both on the same cart, the calender will book them both for the 13.5 what can cause a big mass for the owner of the site.
i thought that if i could make the button to just send me to the checkout page instantly on clicking order now, it will solve the problem.

best regards, Etamar.

Are you using the Booking API or the Stores API?

If you are using the Booking API, you can do this:

import wixBookings from "wix-bookings"

$w.onReady(async () => {
    let availability = await wixBookings.getServiceAvailability("87edd4e0-42b1-4802-8766-584f3eeb6436") //Service ID
    let slots = availability.slots
    let chosenSlot = slots[1] //Chosen slot available to booking

    let formFieldValues = [
        {
            _id: "20657271-c55f-43d6-adfd-39b7acc38e11", // name field ID
            value: "John Doe",
        },
        {
            _id: "87edd4e0-42b1-4802-8766-584f3eeb6436", // email field ID
            value: "john@doe.com",
        },
    ]

    let bookingInfo = {
        slot: chosenSlot,
        formFields: formFieldValues,
    }

    let options = {
        paymentType: "wixPay_Offline", //Here you can define the payment method
        couponCode: "thecouponcode", //Here you put the coupon code
    }

    let booking = await wixBookings.checkoutBooking(bookingInfo, options)
    let bookingId = booking.bookingId
    let bookingStatus = booking.status
    console.log(bookingId, bookingStatus)
})