Javascript :在JSON数组中查找相同日期但不同维度的指标总和

// 假设JSON数组名为data
var data = [
  { "date": "2022-01-01", "dimension": "A", "metric": 10 },
  { "date": "2022-01-01", "dimension": "B", "metric": 20 },
  { "date": "2022-01-02", "dimension": "A", "metric": 15 },
  { "date": "2022-01-02", "dimension": "B", "metric": 25 },
  // 其他对象...
];

var metricSumByDate = {};

for (var i = 0; i < data.length; i++) {
  var obj = data[i];
  var date = obj.date;
  var metric = obj.metric;

  if (metricSumByDate[date]) {
    metricSumByDate[date] += metric;
  } else {
    metricSumByDate[date] = metric;
  }
}

console.log(metricSumByDate);

{
  "2022-01-01": 30,
  "2022-01-02": 40
}