JavaScript设计模式组合设计模式案例

        class Staff {
        //员工名  员工薪资  员工岗位
            constructor(name, salary, position) {
                this.name = name;
                this.salary = salary;
                this.position = position;
            }
            // 获取员工名字
            getName() {
                return this.name;
            }
            //修改员工薪资
            setSalary(salary) {
                this.salary = salary;
            }
            // 获取员工薪资
            getSalary() {
                return this.salary;
            }
            // 设置员工岗位
            setPosition(position) {
                this.position = position;
            }
            // 获取员工岗位
            getPosition() {
                return this.position;
            }
        }

        class StoreMembers {
            constructor() {
               //店铺人员总职员
                this.employees = [];
            }
            // 往店铺总职员添加员工
            addEmployee(employee) {
                this.employees.push(employee);
            }
            // 获取店铺职员总开销
            getNetSalaries() {
                let netSalary = 0;
                netSalary = this.employees.reduce((total, currt) => total.getSalary() + currt.getSalary())
                return netSalary;
            }
            // 获取店铺职员信息名单
            getPositionList() {
                return (this.employees.map(res => ({ name: res.getName(), position: res.getPosition(), salary: res.getSalary() })))
            }
        }

 // 创建俩个员工类实例
        const xh = new Staff("小红", 12000, '服务员');
        const xm = new Staff("小明", 10000, '收银员');
       // 创建店铺类
       const storeMembers = new StoreMembers();
       //往店铺中添加新的职员
       storeMembers.addEmployee(xh);
       storeMembers.addEmployee(xm);
       //获取店铺职员的总薪资
       console.log("职员薪资总额：", storeMembers.getNetSalaries());
       //获取店铺职员总职位信息
      console.log("职员总职位信息：", storeMembers.getPositionList());