javascript - 解析 JSON 并加载到数组中

Question

JSON-https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=demo

我试图从上面的链接中获取 JSON 并将其放置为以下格式(日期、开盘价、最高价、最低价、收盘价)...

[
[1277424000000,38.58,38.61,37.97,38.10],
[1277683200000,38.13,38.54,37.79,38.33],
[1277769600000,37.73,37.77,36.33,36.60],
[1277856000000,36.67,36.85,35.72,35.93],
]

日期不需要必须是纪元时间。

我的代码....

$.getJSON('https://www.alphavantage.co/query?
function=TIME_SERIES_DAILY&symbol=MSFT&apikey=demo', function(data) {
//Get the time series data
var timeseries = data['Time Series (Daily)']
var ohlcarray = [];
//Loop through each time series and convert it to JSON format
  $.each(timeseries, function(key, value) {
        var ohlcdata=[];
        ohlcdata[0]=value[0];//date
        ohlcdata[1]=value[1];//open
        ohlcdata[2]=value[2];//high
        ohlcdata[3]=value[3];//low
        ohlcdata[4]=value[4];//low
        ohlcarray.push(ohlcdata);
  });
console.log(ohlcarray[0]);//test if worked properly
});

输出....

[undefined, undefined, undefined, undefined, undefined]

值[x]返回未定义。关于为什么会发生这种情况有什么想法吗？

谢谢!

Answer 1

原因是在each循环中，value不是一个列表而是一个对象。要访问它，您必须使用 key 来获取它。

ohlcdata[0] = key; //date
ohlcdata[1] = value['1. open']; //open
ohlcdata[2] = value['2. high']; //high
ohlcdata[3] = value['3. low']; //low
ohlcdata[4] = value['4. close']; //low

https://jsfiddle.net/koralarts/7c2fkf93/2/