按多个对象对数组进行分组- JavaScript

const array = [
  { name: 'Alice', group: 'A' },
  { name: 'Bob', group: 'A' },
  { name: 'Charlie', group: 'B' },
  { name: 'Dave', group: 'C' },
  { name: 'Eve', group: 'B' }
];

const grouped = array.reduce((result, current) => {
  const { group, ...rest } = current;
  if (result[group]) {
    result[group].push(rest);
  } else {
    result[group] = [rest];
  }
  return result;
}, {});

console.log(grouped);

{
  A: [
    { name: 'Alice' },
    { name: 'Bob' }
  ],
  B: [
    { name: 'Charlie' },
    { name: 'Eve' }
  ],
  C: [
    { name: 'Dave' }
  ]
}