我是一位初學javascript和編碼的初學者。 我想要做的是從這個websocket數據源獲得出價(數組),但我很掙扎,在我的代碼中我試圖打印(console.log)只有「bidPrice」,而不是其他所有東西「asksize」,「bidize」等等等 當我運行我的代碼我只得到undefined,而不是「bidPrice」, 這裏缺少什麼? 感謝您的任何幫助從node.js中的websocket數據饋送中讀取JSON數組
這裏結果(CMD)當我運行代碼不好!!!!
C:\Users\Desktop\codesource>node wss.js
Connection opened
undefined
undefined
undefined
這裏是我的Node.js代碼:
這裏從bitmex WebSocket的未來數據
Connection opened
{ info: 'Welcome to the BitMEX Realtime API.',enter code here
version: '1.2.0',
timestamp: '2016-12-28T22:27:15.000Z',
docs: 'https://www.bitmex.com/app/wsAPI',
heartbeatEnabled: false }
{ success: true,
subscribe: 'quote:XBTUSD',
request: { op: 'subscribe', args: [ 'quote:XBTUSD' ] } }
{ table: 'quote',
keys: [],
types:
{ timestamp: 'timestamp',
symbol: 'symbol',
bidSize: 'long',
bidPrice: 'float',
askPrice: 'float',
askSize: 'long' },
foreignKeys: { symbol: 'instrument' },
attributes: { timestamp: 'sorted', symbol: 'grouped' },
action: 'partial',
data:
[ { timestamp: '2016-12-28T22:26:54.645Z',
symbol: 'XBTUSD',
bidSize: 12,
bidPrice: 969.59,
askPrice: 971.06,
askSize: 499 } ] }
看來它不工作太
console.log(response.data[0].bidPrice);
Connection opened
C:\Users\jalal\Desktop\codesource\wss.js:24
console.log(response.data[0].bidPrice);
^
TypeError: Cannot read property '0' of undefined
at WebSocket.<anonymous> (C:\Users\jalal\Desktop\codesource\wss.js:24:27)
at emitTwo (events.js:106:13)
at WebSocket.emit (events.js:191:7)
at Receiver.ontext (C:\Users\jalal\Desktop\codesource\node_modules\ws\lib\WebSocket.js:841:10)
感謝,但不工作,也許我錯過出頭其他 – itriad