在asp.net mvc中使用jquery查找同级输入值

I have a page in my Asp.net mvc projct in Visual studio 2015 where i want to update the user shopping cart with ajax when he changes the quantity of an item. But I have to get the Article Code which is in another input in the same div but i don`t know how to get it. Everything works I just need to Retrieve The Code To Send It To the function "AsyncSauvPanier".I have a page in my Asp.net mvc projct in Visua