Kartenzahlung mit „Meses sin intereses“ akzeptieren

<script src="https://js.stripe.com/v3/"></script>

<div id="details">
  <input id="cardholder-name" type="text" placeholder="Cardholder name">
  <!-- placeholder for Elements -->
  <form id="payment-form">
    <div id="card-element"></div>
    <button id="card-button">Next</button>
  </form>
</div>

const stripe = Stripe(
'pk_test_TYooMQauvdEDq54NiTphI7jx');

const elements = stripe.elements();
const cardElement = elements.create('card');
cardElement.mount('#card-element');

const cardholderName = document.getElementById('cardholder-name');
const form = document.getElementById('payment-form');

form.addEventListener('submit', async (ev) => {
  ev.preventDefault();
  const {paymentMethod, error} = await stripe.createPaymentMethod(
    'card',
    cardElement,
    {billing_details: {name: cardholderName.value}},
  );
  if (error) {
    // Show error in payment form
  } else {
    // Send paymentMethod.id to your server (see Step 2)
    const response = await fetch('/collect_details', {
      method: 'POST',
      headers: {'Content-Type': 'application/json'},
      body: JSON.stringify({payment_method_id: paymentMethod.id}),
    });

    const json = await response.json();

    // Handle server response (see Step 3)
    handleInstallmentPlans(json);
  }
});

{
  "id": "pi_1FKDPTJXdud1yP2PpUXNgq0V",
  "object": "payment_intent",
  "amount": 3099,
...
  "payment_method_options": {
    "card": {
      "installments": {
        "enabled": true,
        "plan": null,
        "available_plans": [
          {
            "count": 3,
            "interval": "month",
            "type": "fixed_count"
          },

<div id="plans" hidden>
  <form id="installment-plan-form" >
    <label><input id="immediate-plan" type="radio" name="installment_plan" value="-1" />Immediate</label>
    <input id="payment-intent-id" type="hidden" />
  </form>
  <button id="confirm-button">Confirm Payment</button>
</div>

<div id="result" hidden>
  <p id="status-message"></p>
</div>

const selectPlanForm = document.getElementById('installment-plan-form');
let availablePlans = [];

const handleInstallmentPlans = async (response) => {
  if (response.error) {
    // Show error from server on payment form
  } else {
    // Store the payment intent ID.
    document.getElementById('payment-intent-id').value = response.intent_id;
    availablePlans = response.available_plans;

    // Show available installment options
    availablePlans.forEach((plan, idx) => {
      const newInput = document.getElementById('immediate-plan').cloneNode();
      newInput.setAttribute('value', idx);
      newInput.setAttribute('id', '');
      const label = document.createElement('label');
      label.appendChild(newInput);
      label.appendChild(
        document.createTextNode(`${plan.count} ${plan.interval}s`),
      );

      selectPlanForm.appendChild(label);
    });

    document.getElementById('details').hidden = true;
    document.getElementById('plans').hidden = false;
  }
};

const confirmButton = document.getElementById('confirm-button');

confirmButton.addEventListener('click', async (ev) => {
  const selectedPlanIdx = selectPlanForm.installment_plan.value;
  const selectedPlan = availablePlans[selectedPlanIdx];
  const intentId = document.getElementById('payment-intent-id').value;
  const response = await fetch('/confirm_payment', {
    method: 'POST',
    headers: {'Content-Type': 'application/json'},
    body: JSON.stringify({
      payment_intent_id: intentId,
      selected_plan: selectedPlan,
    }),
  });

  const responseJson = await response.json();

  // Show success / error response.
  document.getElementById('plans').hidden = true;
  document.getElementById('result').hidden = false;

  var message;
  if (responseJson.status === "succeeded" && selectedPlan !== undefined) {
    message = `Success! You made a charge with this plan:${
      selectedPlan.count
    } ${selectedPlan.interval}`;
  } else if (responseJson.status === "succeeded") {
    message = "Success! You paid immediately!";
  } else {
    message = "Uh oh! Something went wrong";
  }

  document.getElementById("status-message").innerText = message;
});

{
  "id": "pi_1FKDPFJXdud1yP2PMSXLlPbg",
  "object": "payment_intent",
  "amount": 3099,
...
  "charges": {
    "data": [
      {
        "id": "ch_1FKDPHJXdud1yP2P2u79mcIX",
        "object": "charge",
        "amount": 3099,
        "payment_method_details": {
          "card": {
            "installments": {
              "plan": {
                "count": 3,
                "interval": "month",
                "type": "fixed_count"
              }
            },