zulip/static/js/billing/billing.js

exports.initialize = function () {
    helpers.set_tab("billing");

    const stripe_key = $("#payment-method").data("key");
    const card_change_handler = StripeCheckout.configure({
        // eslint-disable-line no-undef
        key: stripe_key,
        image: "/static/images/logo/zulip-icon-128x128.png",
        locale: "auto",
        token(stripe_token) {
            helpers.create_ajax_request("/json/billing/sources/change", "cardchange", stripe_token);
        },
    });

    $("#update-card-button").on("click", (e) => {
        const email = $("#payment-method").data("email");
        card_change_handler.open({
            name: "Zulip",
            zipCode: true,
            billingAddress: true,
            panelLabel: "Update card",
            email,
            label: "Update card",
            allowRememberMe: false,
        });
        e.preventDefault();
    });

    $("#change-plan-status").on("click", (e) => {
        helpers.create_ajax_request("/json/billing/plan/change", "planchange", undefined, [
            "status",
        ]);
        e.preventDefault();
    });
};

window.billing = exports;

$(() => {
    exports.initialize();
});