Ecommerce Shopify WordPress Discussion

show/hide drop down using ajax on shopify product page

Im trying to show and hide a dropdown on my shopify product page if one of the product variants = 9ct Gold. here is the code I am using so far. The problem I am having is with the API URL for shopify I assume. I cant work out what URL to use for shopify variants on the frontend. At the moment nothing is showing and I cant work out why. <script> document.addEventListener('DOMContentLoaded', function() { var productId = '{{ }}'; // Access the current product ID with Liquid var bandWidthSelect = document.getElementById('band-width'); var xhr = new XMLHttpRequest();'GET', '' + productId + '.json'); xhr.setRequestHeader('Content-Type', 'application/json'); xhr.onreadystatechange = function() { if (xhr.readyState === XMLHttpRequest.DONE) { if (xhr.status === 200) { var response = JSON.parse(xhr.responseText); var variants = response.product.variants; var selectedVariant = variants.find(function(variant) { return variant.option1 === '9ct Gold'; }); if (selectedVariant) { var bandWidthOptions = selectedVariant.metafields.custom.band_widths.split(','); bandWidthSelect.innerHTML = '<option value="">Select Band Width</option>'; for (var i = 0; i < bandWidthOptions.length; i++) { var option = document.createElement('option'); option.value = bandWidthOptions[i].trim(); option.textContent = bandWidthOptions[i].trim(); bandWidthSelect.appendChild(option); } = 'block'; } else { = 'none'; } } else { console.error('Error fetching product:', xhr.status); } } }; xhr.send(); }); </script>
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