链式数组操作

const list = [
  {
    age: 1,
    id: 2,
    name: "江",
  },
  {
    age: 18,
    id: 3,
    name: "张",
  },
  {
    age: 21,
    id: 1,
    name: "李",
  },
  {
    age: 8,
    id: 4,
    name: "王",
  },
  {
    age: 23,
    id: 5,
    name: "刘",
  },
];

function Query(list) {
  this.list = list;
}

Query.prototype.where = function(cb) {
  this.list = this.list.filter(cb);
  return this;
};

Query.prototype.sortBy = function(key) {
  this.list.sort((a, b) => a[key] - b[key]); // 升序排列
  return this;
};

Query.prototype.execute = function() {
  return this.list;
};

function query(list) {
  return new Query(list);
}

const result = query(list)
  .where((item) => item.age >= 18)
  .sortBy("id")
  .execute();

console.log(result);