javascript - 如何根据lodash中每个数组的不同属性从2个数组返回1个数组？

Question

Lodash v 4.17.15

假设我有 2 个数组

var users = [{
      id: 12,
      name: Adam
   },{
      id: 14,
      name: Bob
   },{
      id: 16,
      name: Charlie
   },{
      id: 18,
      name: David
   }
]


var jobs = [{
      empid: 12,
      profession: Engineer
   },{
      empid: 14,
      profession: CEO
   },{
      empid: 16,
      profession: CFO
   },{
      empid: 18,
      profession: CTO
   }
]

预期结果

var jobsEmp= [{
          empid: 12,
          id: 12,
          name: Adam
          profession: Engineer
       },{
          empid: 14,
          id: 14,
          name: Bob
          profession: CEO
       },{
          empid: 16,
         id: 16,
          name: Charlie
          profession: CFO
       },{
          empid: 18,
          id: 18,
          name: David
          profession: CTO
       }
    ]

我通常这样做:

var jobsEmp =  _.forEach(users, function (emp) {
                    emp.jobs = _.find(jobs, function (jb) {
                        return jb.empid === emp.id;
                    });
                });

但我注意到这不是最好的方法，我已经阅读文档很长一段时间了，但我只是不知道什么技术是最好的，如何在lodash中正确地做到这一点？

Answer 1

你可以这样做，但在我看来，无论怎样让它对你和你的团队来说更具可读性。我更喜欢具有更高可读性的方法

const _ = require('lodash')

const users = [{
      id: 12,
      name: 'Adam'
   },{
      id: 14,
      name: 'Bob'
   },{
      id: 16,
      name: 'Charlie'
   },{
      id: 18,
      name: 'David'
   }
]


const jobs = [{
      empid: 12,
      profession: 'Engineer'
   },{
      empid: 14,
      profession: 'CEO'
   },{
      empid: 16,
      profession: 'CFO'
   },{
      empid: 18,
      profession: 'CTO'
   }
]

const merged = _.merge(_.keyBy(users, 'id'), _.keyBy(jobs, 'empid'));
const values = _.values(merged);
console.log(values);

输出

[ { id: 12, name: 'Adam', empid: 12, profession: 'Engineer' },
  { id: 14, name: 'Bob', empid: 14, profession: 'CEO' },
  { id: 16, name: 'Charlie', empid: 16, profession: 'CFO' },
  { id: 18, name: 'David', empid: 18, profession: 'CTO' } ]