我有一个 JSON 字符串:
{
"country": "Mauritius",
"provinces": [
"mainland"
],
"timeline": {
"cases": {
"3/19/20": 3,
"3/20/20": 12,
"3/21/20": 14,
"3/22/20": 28,
[...]
"4/17/20": 324
},
"deaths": {
"3/19/20": 0,
"3/20/20": 0,
"3/21/20": 1,
"3/22/20": 2,
[...]
"4/17/20": 9
},
"recovered": {
"3/19/20": 0,
"3/20/20": 0,
"3/21/20": 0,
"3/22/20": 0,
[...]
"4/17/20": 108
}
}
}
我想要实现的是将JavaScript中的cases、deaths和recovered的值解析为独立数组。例如,我希望找到cases数量上与前一天的差异,以
3/19/20
作为起始日期,初始cases为3。我希望对死亡人数和恢复情况应用相同的逻辑。因此,3/20/20应该有一个值为9(12-3)。最后,我想将每个值存储在数组中,以便在图表上使用这些数据。请问有人能帮我在JavaScript或JQuery中解析这些数据吗?
$.getJSON('https://corona.lmao.ninja/v2/historical/mauritius?lastdays=30', function(data) {
let result = data.map(function(e) {
return {
cases: e.timeline.cases,
deaths: e.timeline.deaths,
recovered: e.timeline.recovered
};
}).reduce(function(acc, e) {
Object.keys(e).forEach(function(t) {
Object.keys(e[t]).forEach(function(d) {
acc[t][d] = (acc[t][d] || 0) - e[t][d];
});
});
return acc;
}, {
deaths: {},
recovered: {},
cases: {}
});
console.log(result)
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
(index):135 Uncaught TypeError: data.map is not a function
,真糟糕。 - CadaMerxObject.keys(data.timeline).map
开始。 - mplungjan