Backend exports variables for Frontend

how-to-export-variables-for-frontend.md

Template engine:

Usually, we place it in script section of footer.

<script type="application/json" data-from-backend>
    {
      "product_id": "{{ product.id }}",
      "user_address": "{{ userAddress }}"
    }
</script>

JS code:

const jsonObj = JSON.parse($('[data-from-backend]').html());