Vue3如何按照某个字段将数组分成多个数组

const originalArray = [
  { id: 1, category: 'A', name: 'Item 1' },
  { id: 2, category: 'B', name: 'Item 2' },
  { id: 3, category: 'A', name: 'Item 3' },
  { id: 4, category: 'C', name: 'Item 4' },
  { id: 5, category: 'B', name: 'Item 5' },
];

const groupedByCategory = originalArray.reduce((acc, item) => {
  const key = item.category;
  if (!acc[key]) {
    acc[key] = [];
  }
  acc[key].push(item);
  return acc;
}, {});

// 结果是一个对象，键是分类，值是该分类下的数组
console.log(groupedByCategory);

import { groupBy } from 'lodash';

const groupedByCategory = groupBy(originalArray, 'category');
console.log(groupedByCategory);

import { computed } from 'vue';

export default {
  setup() {
    const originalArray = [
      { id: 1, category: 'A', name: 'Item 1' },
      { id: 2, category: 'B', name: 'Item 2' },
      // ...其他数据
    ];

    const groupedByCategory = computed(() => {
      return originalArray.reduce((acc, item) => {
        const key = item.category;
        if (!acc[key]) {
          acc[key] = [];
        }
        acc[key].push(item);
        return acc;
      }, {});
    });

    return {
      groupedByCategory
    };
  }
};

const groupedArray = Object.values(
  originalArray.reduce((acc, item) => {
    const key = item.category;
    if (!acc[key]) {
      acc[key] = [];
    }
    acc[key].push(item);
    return acc;
  }, {})
);

console.log(groupedArray);
// 输出: [
//   [{ id: 1, category: 'A', name: 'Item 1' }, { id: 3, category: 'A', name: 'Item 3' }],
//   [{ id: 2, category: 'B', name: 'Item 2' }, { id: 5, category: 'B', name: 'Item 5' }],
//   [{ id: 4, category: 'C', name: 'Item 4' }]
// ]

<template>
  <div v-for="(group, category) in groupedByCategory" :key="category">
    <h3>Category: {{ category }}</h3>
    <ul>
      <li v-for="item in group" :key="item.id">
        {{ item.name }}
      </li>
    </ul>
  </div>
</template>