fastspring.builder.update(productId,qty)

<!--

    DEMO INFO

    fastspring.builder.update() changes the quantity of a product.

-->

<select id="quantity">

    <option value="1">1</option>

    <option value="2">2</option>

    <option value="3">3</option>

    <option value="4">4</option>

    <option value="5">5</option>

</select>

​

<button onclick="fastspring.builder.update('phot-io-main-app', document.getElementById('quantity').value);">Update Quantity</button>

​

<!--

    DEMO EFFECTS

-->

<br /><br />

<div>

    Quantity: <span data-fsc-item-path="phot-io-main-app" data-fsc-item-quantity></span>

</div>

​

<div>

    Order Total: <span data-fsc-order-total></span>

</div>

​

<!--

    DEMO SETUP

        - Initialize the Store Builder Library

        - Add item in the cart

-->

<script

    id="fsc-api"

    src="https://sbl.onfastspring.com/sbl/1.0.2/fastspring-builder.min.js"

    type="text/javascript"

    data-storefront="fastspringexamples.test.onfastspring.com/popup-fastspringexamples">

</script>

​

<script type="text/javascript">

    fastspring.builder.add('phot-io-main-app');

</script>