클래스: FetchItemsRequestData
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최종 업데이트: 2025-07-25(UTC)
[null,null,["최종 업데이트: 2025-07-25(UTC)"],[[["\u003cp\u003e\u003ccode\u003eFetchItemsRequestData\u003c/code\u003e is used to request media items around a reference item within a media session.\u003c/p\u003e\n"],["\u003cp\u003eIt allows specifying the number of items to fetch before (\u003ccode\u003eprevCount\u003c/code\u003e) and after (\u003ccode\u003enextCount\u003c/code\u003e) a reference item (\u003ccode\u003eitemId\u003c/code\u003e).\u003c/p\u003e\n"],["\u003cp\u003eThe request includes standard properties like \u003ccode\u003erequestId\u003c/code\u003e, and optional ones like \u003ccode\u003ecustomData\u003c/code\u003e and \u003ccode\u003emediaSessionId\u003c/code\u003e for context.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eFetchItemsRequestData\u003c/code\u003e inherits properties from \u003ccode\u003ecast.framework.messages.RequestData\u003c/code\u003e, providing additional functionalities like request sequencing.\u003c/p\u003e\n"]]],[],null,["# Class: FetchItemsRequestData\n\ncast.[framework](/cast/docs/reference/web_receiver/cast.framework).[messages](/cast/docs/reference/web_receiver/cast.framework.messages).FetchItemsRequestData\n==============================================================================================================================================================\n\nclass static\n\nFetch items request data.\n\nConstructor\n-----------\n\n### FetchItemsRequestData\n\nnew\nFetchItemsRequestData(itemId, nextCount, prevCount)\n\n| #### Parameter ||\n|-----------|--------|\n| itemId | number |\n| nextCount | number |\n| prevCount | number |\n\nExtends\n: [cast.framework.messages.RequestData](/cast/docs/reference/web_receiver/cast.framework.messages.RequestData)\n\nProperties\n----------\n\n### customData\n\n(non-null Object or undefined)\n\nApplication-specific data for this request. It enables the sender and\nreceiver to easily extend the media protocol without having to use a new\nnamespace with custom messages.\n\nInherited from\n: [cast.framework.messages.RequestData#customData](/cast/docs/reference/web_receiver/cast.framework.messages.RequestData#customData)\n\n### itemId\n\nnumber\n\nID of the reference media item for fetching more items.\n\n### mediaSessionId\n\n(number or undefined)\n\nId of the media session that the request applies to.\n\nInherited from\n: [cast.framework.messages.RequestData#mediaSessionId](/cast/docs/reference/web_receiver/cast.framework.messages.RequestData#mediaSessionId)\n\n### nextCount\n\nnumber\n\nNumber of items after the reference item to be fetched.\n\n### prevCount\n\nnumber\n\nNumber of items before the reference item to be fetched.\n\n### requestId\n\nnumber\n\nId of the request, used to correlate request/response.\n\nInherited from\n: [cast.framework.messages.RequestData#requestId](/cast/docs/reference/web_receiver/cast.framework.messages.RequestData#requestId)\n\n### sequenceNumber\n\n(number or undefined)\n\nA number to synchronize all queue commands.\nIf provided for a queue command, the SDK will verify the queue latest\nsequence number match the request.\nCurrent sequenceNumber is provided as part of outgoing queue changed\nmessages.\n\nInherited from\n: [cast.framework.messages.RequestData#sequenceNumber](/cast/docs/reference/web_receiver/cast.framework.messages.RequestData#sequenceNumber)"]]
