Question

我有一个来自站点https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&outputsize=full&apikey=demo的json

看起来像

{
"Meta Data": {
    "1. Information": "Daily Prices (open, high, low, close) and Volumes",
    "2. Symbol": "MSFT",
    "3. Last Refreshed": "2018-07-03",
    "4. Output Size": "Full size",
    "5. Time Zone": "US/Eastern"
},
"Time Series (Daily)": {
    "2018-07-03": {
        "1. open": "100.4800",
        "2. high": "100.6300",
        "3. low": "98.9400",
        "4. close": "99.0500",
        "5. volume": "14670275"
    },
    "2018-07-02": {
        "1. open": "98.1000",
        "2. high": "100.0600",
        "3. low": "98.0000",
        "4. close": "100.0100",
        "5. volume": "19564521"
    }
}
}

您可以在“时间序列（每日）”中看到不同的日期对象。我想访问每个日期中的所有键，并希望将数据放入数组中。我使用的是javascript，不知道如何遍历这些不同的日期。

        console.log(data['TimeSeries (Daily)']['2018-07-03']);

这是我访问日期的方式，但这是我要遍历每个日期的单个日期。

Answer 1

这将为您提供所需的输出

var tSeries=data['Time Series (Daily)'];
for(var tempData in tSeries)
{   
    console.log(tSeries[tempData]);
    console.log(tSeries[tempData]['1. open']);
    console.log(tSeries[tempData]['2. high']);
}

更新

如果您需要访问日期并希望将其放在单独的数组中

var tempDataStore = [];
var tSeries=data['Time Series (Daily)'];
for(var tempData in tSeries)
{   
    // Here You get your Date
    console.log("Your Date - " + tempData);
    console.log(tSeries[tempData]);
    console.log(tSeries[tempData]['1. open']);
    console.log(tSeries[tempData]['2. high']);
    tempDataStore.push({"Date":tempData,"open":tSeries[tempData]['1. open']})
}

console.log(tempDataStore)

Answer 2

浏览“ TimeSeries（每日）”对象的键。例如，

for(date in obj) {
    console.log(obj[date]);
}

要访问每个日期的数据，只需添加另一个循环即可。

Answer 3

您可以使用for in循环获取所需的输出

let myList = data['TimeSeries (Daily)'];
for (var index in myList) 
{
    console.log(myList[index]);
}

致谢

Answer 4

如果您使用的是现代JavaScript引擎或babel之类的编译器，则可以使用Object.values和Object.entries来完成：

Object.values(myData["Time Series (Daily)"]).forEach(function (date) {
  Object.entries(date).forEach(function([period, value]) {
    console.log(period, ':', value);
  })
})

这将在您的控制台中记录以下内容：

1. open : 100.4800
2. high : 100.6300
3. low : 98.9400
// ....

jsfiddle

Answer 5

恕我直言，这就是您要寻找的：

data = {
"Meta Data": {
    "1. Information": "Daily Prices (open, high, low, close) and Volumes",
    "2. Symbol": "MSFT",
    "3. Last Refreshed": "2018-07-03",
    "4. Output Size": "Full size",
    "5. Time Zone": "US/Eastern"
},
"Time Series (Daily)": {
    "2018-07-03": {
        "1. open": "100.4800",
        "2. high": "100.6300",
        "3. low": "98.9400",
        "4. close": "99.0500",
        "5. volume": "14670275"
    },
    "2018-07-02": {
        "1. open": "98.1000",
        "2. high": "100.0600",
        "3. low": "98.0000",
        "4. close": "100.0100",
        "5. volume": "19564521"
    }
}
}


Object.keys(data["Time Series (Daily)"]).forEach(date => console.log(date))

Answer 6

这是最简单的方法...

尝试在同一域中以防止跨域问题

从JSON解析和获取数据

6 个答案: