Thank you so much Yisrael!
So I wrote the get function in a file “http-functions.js” created in the code site backend, to get the store products.
But when I test the URL https://{user_name}.wixsite. com/{site_name}/_functions/ with my get function for on https://reqbin. com, I get an error 404, the URL is not supported…
It seems to me that I must retrieve a Json content with the elements of my store products no?