我試圖通過物件陣列進行映射以從每個物件中提取一些值。
當我運行我的代碼時，我在 console.log(open) 上得到 undefined 結果，但獲取所有資料 get log for the console.log(data)
有人能告訴我為什么它未定義或我的代碼有什么問題嗎？
提前致謝
//Data from CCompare
CryptoCompareAPI.histoHour('BTC', 'USD')
.then(data => {
data = data.reverse()
console.log(data)
const open = data.map( d => d[3])
console.log(open)
tulind.indicators.sma.indicator([close],[3],(error,res) => {
if (error) return log(error)
console.log(res)
})
}
//console.log("high",data[i].high)
//console.log(data.length)
})
.catch(console.error())
資料
[{
time: 1638356400,
high: 57274.38,
low: 56837.03,
open: 57014.22,
volumefrom: 761.03,
volumeto: 43377564.28,
close: 57193.03,
conversionType: 'direct',
conversionSymbol: ''
},
{
time: 1638352800,
high: 57212.91,
low: 56897.87,
open: 57144.92,
volumefrom: 884.14,
volumeto: 50454456.17,
close: 57014.22,
conversionType: 'direct',
conversionSymbol: ''
},
{
time: 1638349200,
high: 57197.5,
low: 56769.43,
open: 56935.98,
volumefrom: 1157.5,
volumeto: 65981513.98,
close: 57144.92,
conversionType: 'direct',
conversionSymbol: ''
},
{
time: 1638345600,
high: 57851.44,
low: 56863.93,
open: 57169.38,
volumefrom: 2238.66,
volumeto: 128240428.38,
close: 56935.98,
conversionType: 'direct',
conversionSymbol: ''
},
... 90 more items
]
uj5u.com熱心網友回復：
const data = [{
time: 1638356400,
high: 57274.38,
low: 56837.03,
open: 57014.22,
volumefrom: 761.03,
volumeto: 43377564.28,
close: 57193.03,
conversionType: 'direct',
conversionSymbol: ''
},
{
time: 1638352800,
high: 57212.91,
low: 56897.87,
open: 57144.92,
volumefrom: 884.14,
volumeto: 50454456.17,
close: 57014.22,
conversionType: 'direct',
conversionSymbol: ''
},
{
time: 1638349200,
high: 57197.5,
low: 56769.43,
open: 56935.98,
volumefrom: 1157.5,
volumeto: 65981513.98,
close: 57144.92,
conversionType: 'direct',
conversionSymbol: ''
},
{
time: 1638345600,
high: 57851.44,
low: 56863.93,
open: 57169.38,
volumefrom: 2238.66,
volumeto: 128240428.38,
close: 56935.98,
conversionType: 'direct',
conversionSymbol: ''
},
]
const open = data.map(e => e.open)
console.log(open)轉載請註明出處，本文鏈接：https://www.uj5u.com/caozuo/371482.html
標籤：javascript 节点.js