我有一个从这个 JSON 生成的对象:
{
"data": {
"Meta Data": {
"1. Information": "Monthly Prices (open, high, low, close) and Volumes",
"2. Symbol": "MSFT",
"3. Last Refreshed": "2017-08-18",
"4. Time Zone": "US/Eastern"
},
"Monthly Time Series": {
"2017-08-18": {
"1. open": "73.1000",
"2. high": "74.1000",
"3. low": "71.2800",
"4. close": "72.4900",
"5. volume": "285933387"
},
"2017-07-31": {
"1. open": "69.3300",
"2. high": "74.4200",
"3. low": "68.0200",
"4. close": "72.7000",
"5. volume": "451248934"
}
}
}
}
使用 Object.keys()
,我能够获得键“Monthly time series”,但如何访问其中的键?我想通过“每月时间序列”键中存在的键运行 for 循环。我该怎么做?
最佳答案
您可以使用 Object.keys()获取键数组,但我建议使用 Array.prototype.forEach() 迭代键数组而不是 for...loop .
代码:
const obj = {"data": {"Meta Data": {"1. Information": "Monthly Prices (open, high, low, close) and Volumes","2. Symbol": "MSFT","3. Last Refreshed": "2017-08-18","4. Time Zone": "US/Eastern"},"Monthly Time Series": {"2017-08-18": {"1. open": "73.1000","2. high": "74.1000","3. low": "71.2800","4. close": "72.4900","5. volume": "285933387"},"2017-07-31": {"1. open": "69.3300","2. high": "74.4200","3. low": "68.0200","4. close": "72.7000","5. volume": "451248934"}}}};
Object
.keys(obj.data['Monthly Time Series'])
.forEach(function (k) {
console.log(obj.data['Monthly Time Series'][k]['1. open']);
});
关于javascript - 使用动态属性名称访问嵌套属性,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45795569/