How to parse a product page in the steam marketplace?

Question

JavaScript

Good day to all!
I'm trying to parse data from product price charts on the steam marketplace on pages like https://steamcommunity.com/market/listings/730/Gam...
These charts look like this:

I didn't find the source data for these numbers on the page itself. They appear when you hover over a graph point:

At this point, I don't see any json to request this data.
There is a suspicion that these prices are calculated depending on the coordinates of the point. Even so, it is not clear how the number of purchases at this point is calculated.
Maybe someone will point where to dig?

Answer 1

How to parse a product page in the steam marketplace?

It's as easy as sending 2 bytes.
You need to dig here
1. graph

new Ajax.Request( 'https://steamcommunity.com/market/pricehistory/', {
        method: 'get',
        parameters: {
          appid: this.m_item.appid, 
          market_hash_name: GetMarketHashName( this.m_item )
        },
        onSuccess: function( transport ) { SellItemDialog.OnPriceHistorySuccess( transport ); },
        onFailure: function( transport ) { SellItemDialog.OnPriceHistoryFailure( transport ); }
    } );

2. chart
https://steamcommunity.com/market/itemordershistog...

Answer 2

На Сколько я понимаю данные берутся из передаваемого через xhr объекта через некий промежуток времени,
Вот скриншот joxi.ru/Vm6k5ndtxBny72

Answer 3

Если кому нужен конкретный запрос, то вот он: пример