我是一位初学javascript和编码的初学者。 我想要做的是从这个websocket数据源获得出价(数组),但我很挣扎,在我的代码中我试图打印(console.log)只有“bidPrice”,而不是其他所有东西“asksize”,“bidize”等等等 当我运行我的代码我只得到undefined,而不是“bidPrice”, 这里缺少什么? 感谢您的任何帮助从node.js中的websocket数据馈送中读取JSON数组
这里结果(CMD)当我运行代码不好!!!!
C:\Users\Desktop\codesource>node wss.js
Connection opened
undefined
undefined
undefined
这里是我的Node.js代码:
这里从bitmex WebSocket的未来数据
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 } ] }
看来它不工作太
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)
感谢,但不工作,也许我错过出头其他 – itriad