<div class="container">
<div class="row justify-content-md-center mt-5">
<div class="col-12">
<div class="card">
<div class="card-body">
<h5 class="card-title">Test add coupon for Inline Cart</h5>
<p class="card-text">
Add single coupon use case when integrating Inline Checkout
</p>
<a href="#" class="btn btn-success" id="buy-button">Buy now!</a>
</div>
</div>
</div>
</div>
</div>
window.document.getElementById('buy-button').addEventListener('click', function() {
TwoCoInlineCart.products.add({
code: "74B8E17CC0"
});
TwoCoInlineCart.cart.addCoupon('CUPON')
TwoCoInlineCart.cart.checkout();
});