Пример:
{if $product.size?}
<div class="select-wrapper cart__selects-size" data-size="{$product.options.size}" data-product="{$product.id}" data-count="{$product.count}" data-key="{$product.key}">
{'!msOptions' | snippet : [
'product' => $product.id,
'options' => 'size',
'tpl' => 'tpl.msOptions',
]}
</div>
{/if}
Пример:
<script>
window.onload = function() {
var val = document.getElementById('sizeoncard').value;
console.log(val);
};
</script>
<script>
sizeoncard.onclick = function() {
var val = document.getElementById('sizeoncard').value;
console.log(val);
};
</script>