Session SDK Overview

The session.js JavaScript library allows you to collect sensitive payment details from the payer in fields hosted by the gateway. Use this library if you want to control the layout and styling of your payment page, while reducing PCI compliance costs. The gateway collects the payment details from the payer and stores them in a payment session. You can then include the payment session in place of the payment details in the transaction request to process a payment. For full details see Implementing a Hosted Session Integration. The library also has support for collecting multiple sets of payment details on the same payment page, see Multiple Hosted Session for details.

Supported only in Web-Services API version 18 and later.

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https://gateway-japa.americanexpress.com/form/version/57/merchant/<MERCHANTID>/session.js

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<html>
<head>
<!-- INCLUDE SESSION.JS JAVASCRIPT LIBRARY -->
<script src="https://gateway-japa.americanexpress.com/form/version/57/merchant/<MERCHANTID>/session.js"></script>

<!-- APPLY CLICK-JACKING STYLING AND HIDE CONTENTS OF THE PAGE -->
<style id="antiClickjack">body{display:none !important;}</style>
</head>
<body>

<!-- CREATE THE HTML FOR THE PAYMENT PAGE -->

<div>Please enter your payment details:</div>
<h3>Credit Card</h3>
<div>Card Number: <input type="text" id="card-number" class="input-field" title="card number" aria-label="enter your card number" value="" tabindex="1" readonly></div>
<div>Expiry Month:<input type="text" id="expiry-month" class="input-field" title="expiry month" aria-label="two digit expiry month" value="" tabindex="2" readonly></div>
<div>Expiry Year:<input type="text" id="expiry-year" class="input-field" title="expiry year" aria-label="two digit expiry year" value="" tabindex="3" readonly></div>
<div>Security Code:<input type="text" id="security-code" class="input-field" title="security code" aria-label="three digit CCV security code" value="" tabindex="4" readonly></div>
<div>Cardholder Name:<input type="text" id="cardholder-name" class="input-field" title="cardholder name" aria-label="enter name on card" value="" tabindex="5" readonly></div>
<div><button id="payButton" onclick="pay('card');">Pay Now</button></div>

<h3>Gift Card</h3>
<div>Card Number: <input type="text" id="gift-card-number" class="input-field" value="" readonly></div>
<div>Pin:<input type="text" id="gift-card-pin" class="input-field" value="" readonly></div>

<div><button id="payButton" onclick="pay('giftCard');">Pay With Gift Card</button></div>

<h3>Automated Clearing House</h3>
  <div>
  <label class="control-label" id="ach-account-type-label">Account Type:</label>
  <select class="form-control col-sm-6" name="ach-account-type" id="ach-account-type">
  <option value="CONSUMER_SAVINGS">Consumer Savings Account</option>
  <option value="CONSUMER_CHECKING" selected>Consumer Checking Account</option>
  <option value="CORPORATE_CHECKING">Business Checking Account</option>
 </select>
    </div>

<div>Bank Account Holder:<input type="text" id="ach-account-holder" class="input-field" value="" readonly></div>
<div>Bank Account Number:<input type="text" id="ach-account-number" class="input-field" value="" readonly></div>
<div>Routing Number:<input type="text" id="ach-routing-number" class="input-field" value="" readonly></div>

<div><button id="payButton" onclick="pay('ach');">Pay With ACH</button></div>
<hr>


<!-- DISPLAY VISA CHECKOUT AND AMEX EXPRESS CHECKOUT AS A PAYMENT OPTION ON YOUR PAYMENT PAGE -->

<!-- REPLACE THE action URL with the payment URL on your webserver -->
<form name="myform" method="POST" action="https://my.company.com/pay">
<!-- Other fields can be added to enable you to collect additional data on the payment page -->
Email: <input type="text" name="email">
<!-- The hidden values below can be set in the callback function as they are returned when creating the session -->
<input type="hidden" name="sessionId" id="sessionId">
<img id="visaCheckoutButton" alt="Visa Checkout" role="button" class="v-button" style="display: none;" src="https://sandbox.www.v.me/wallet-services-web/xo/button.png"/>
<div id="amex-express-checkout"></div>
</form>

<!-- JAVASCRIPT FRAME-BREAKER CODE TO PROVIDE PROTECTION AGAINST IFRAME CLICK-JACKING -->
<script type="text/javascript">
if (self === top) {
    var antiClickjack = document.getElementById("antiClickjack");
    antiClickjack.parentNode.removeChild(antiClickjack);
} else {
    top.location = self.location;
}

PaymentSession.configure({
    fields: {
        // Attach hosted fields to your payment page
            card: {
                number: "#card-number",
                securityCode: "#security-code",
                expiryMonth: "#expiry-month",
                expiryYear: "#expiry-year",
                nameOnCard: "#cardholder-name"
            },
            giftCard: {
                    number: "#gift-card-number",
                    pin: "#gift-card-pin"
                  },
            ach: {
                    accountType: "#ach-account-type",
                    bankAccountHolder: "#ach-account-holder",
                    bankAccountNumber: "#ach-account-number",
                    routingNumber: "#ach-routing-number"
                  }
          },
    frameEmbeddingMitigation: ["javascript"],
    callbacks: {
        initialized: function(response) {
            // HANDLE INITIALIZATION RESPONSE
            if (response.status === "ok") {
                document.getElementById("visaCheckoutButton").style.display = 'block';
            }
        },

        formSessionUpdate: function(response) {
            // HANDLE RESPONSE FOR UPDATE SESSION
        if (response.status) {
            if ("ok" == response.status) {
                console.log("Session updated with data: " + response.session.id);

                //check if the security code was provided by the user
                if (response.sourceOfFunds.provided.card.securityCode) {
                    console.log("Security code was provided.");
                }

                //check if the user entered a MasterCard credit card
                if (response.sourceOfFunds.provided.card.scheme == 'MASTERCARD') {
                    console.log("The user entered a MasterCard credit card.")
                }
            } else if ("fields_in_error" == response.status)  {

                console.log("Session update failed with field errors.");
                if (response.errors.cardNumber) {
                    console.log("Card number invalid or missing.");
                }
                if (response.errors.expiryYear) {
                    console.log("Expiry year invalid or missing.");
                }
                if (response.errors.expiryMonth) {
                    console.log("Expiry month invalid or missing.");
                }
                if (response.errors.securityCode) {
                    console.log("Security code invalid.");
                }
                if (response.errors.number) {
                    console.log("Gift card number invalid or missing.");
                }
                if (response.errors.pin) {
                    console.log("Pin invalid or missing.");
                }
                if (response.errors.bankAccountHolder) {
                    console.log("Bank account holder invalid.");
                }
                if (response.errors.bankAccountNumber) {
                    console.log("Bank account number invalid.");
                }
                if (response.errors.routingNumber) {
                    console.log("Routing number invalid.");
                }
            } else if ("request_timeout" == response.status)  {
                console.log("Session update failed with request timeout: " + response.errors.message);
            } else if ("system_error" == response.status)  {
                console.log("Session update failed with system error: " + response.errors.message);
            }
        } else {
            console.log("Session update failed: " + response);
        }
        },
        visaCheckout: function(response) {
            // HANDLE VISA CHECKOUT RESPONSE
        },
        amexExpressCheckout: function(response) {
           // HANDLE AMEX EXPRESS CHECKOUT RESPONSE
        }
    },
    interaction: {
        displayControl: {
            formatCard: "EMBOSSED",
            invalidFieldCharacters: "REJECT"
        }
    },
    order: {
        amount: 10.00,
        currency: "AUD"
    },
    wallets: {
        visaCheckout: {
            enabled: true,
            // Add Visa Checkout API specific attributes here
            countryCode: "AU",
            displayName: "Display name",
            locale: "en_au",
            logoUrl: "http://logo.logo",
            payment: {
                cardBrands: [
                    "VISA"
                ]
            },
            review: {
                buttonAction: "Pay",
                message: "Message"
            },
            shipping: {
                acceptedRegions: [
                    "AU"
                ],
                collectShipping: true
            }
        },
        amexExpressCheckout: {
        enabled: true,
        // Add Amex Express Checkout API specific attributes here
        initTags: {
        "theme": "responsive",
        "env": "qa",
        "disable_btn": "false",
        "button_color": "light",
        "client_id": "<MSO Client Id from the Amex Express Checkout configuration page in Merchant Administration>",
        }
    }
}
});

function pay(paymentType) {
    // UPDATE THE SESSION WITH THE INPUT FROM HOSTED FIELDS
    if (paymentType === 'giftCard') {
        PaymentSession.updateSessionFromForm(paymentType, '<localCardBrand>');
    } else {
        PaymentSession.updateSessionFromForm(paymentType);
    }
}
</script>
</body>
</html>

Session SDK Overview

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Functions Copied to clipboard

configure()

updateSessionFromForm()

setFocus()

setFocusStyle()

setHoverStyle()

Callbacks Copied to clipboard

onFocus

onBlur

onChange

onMouseOver

onMouseOut

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