Hi, engineer:
When I uploaded the site, I found customer couldn’t pay.
I found this article by searching.
The engineer made the function of json crawler for safe transactions.
I love them so much. 
I thought I would have a /domain.com/product.json file in my website , where information about the product is written.
But I won’t use it.
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Could you give me an example? （ex: http://snipcart.com/product.json）
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if I use to JSON crawler with json link , how to white < button>
Thank you very much for every engineer! 