描述

数组去重

1.示例

import { uniq } from 'sf-utils2'

uniq([11, 22, 33, 33, 22, 55]) // [11, 22, 33, 55]

// 对象去重
const arr = [
  { id: 1, name: '蔡徐坤' },
  { id: 2, name: '周杰伦' },
  { id: 1, name: '蔡徐坤' },
  { id: 3, name: '傻逼' },
  ,
  { id: 3, name: '傻逼' }
]
uniq(arr, 'id') // [{id: 1, name: '蔡徐坤'}, {id: 2, name: '周杰伦'}, {id: 3, name: '傻逼'}]

2.入参说明

参数	说明	类型	是否必填
val	值	Array	--------

3.源码

import arrayToObj from '@/array/arrayToObj'

/**
 * 数组去重
 * @param list
 * @param {String} PK 如果传入是 Object[] 数据结构，以PK为主键去重
 * @return {*[]}
 */
export const uniq = (list = [], PK) => {
  if (PK) {
    const listObj = arrayToObj(list, PK)
    return [...new Set(list.map(v => v[PK]))].map(v => listObj[v])
  }
  return [...new Set(list)]
}

export default uniq