Why is the request parameter not available?

Question

1C-Bitrix

Hello. Why is the code below returning NULL. While the data is being sent ( screenshot )

Bitrix\Main\Application::getInstance()->getContext()->getRequest()->get("ajax_basket")

Moreover, the data is also sent by the Bitrix code:

BX.ajax({
  method: 'POST',
  dataType: 'json',
  url: self.basketUrl,
  data: self.basketParams,
  onsuccess: BX.proxy(this.basketResult, this)
});

POST is not transmitted at all.

Answer 1

why not getPost?
https://dev.1c-bitrix.ru/api_d7/bitrix/main/httpre...