Question

我正在学习如何在Javascript中构建构造函数，到目前为止一直很好，但我正在努力如何制作一个从数组中删除特定项的方法。

每当我调用Manager.fireEmployee（nameOfEmployee）从阵列中删除该员工时，我都希望这样做。

每当我从构造函数中创建新员工时，还有一种方法可以在数组中自动推送吗？

以下是代码：

class Employee {
    constructor(name, department) {
        this.name = name;
        this.department = department;
    }
    whoAreYou() {
        return `My name is ${this.name} and I am working in ${this.department} department`;
    }
};

class Manager extends Employee {
    constructor(name) {
        super(name, 'General');
    }
    fireEmployee(nameOfEmployee){
        // how to make this method so when I type the name of the employee it will remove it from the array?
    }
};

class SalesPerson extends Employee {
    constructor(name, quota) {
        super(name, 'Sales', quota);
        this.quota = quota;
    }
};

let michael = new Manager('Michael');
let pam = new Employee('Pam', 'Marketing');
let jim = new SalesPerson('Jim', '1000');
let dwight = new SalesPerson('Dwight', '1200');

let arr = [pam, jim, dwight];

Answer 1

我为您Manager课采用略有不同的方法，使其将员工作为一个数组。然后，您可以通过Manager实例轻松调用所有方法来操作employees数组，例如

michael.addEmployee(pam);
michael.fireEmployee(pam);

class Manager extends Employee {
    constructor(name) {
        super(name, 'General');
        this.employees = [];
    }

    addEmployee(employee) {
        if (employee) this.employees.push(employee);
    }

    fireEmployee(employee){
        this.employees.splice(this.employees.indexOf(employee), 1);
    }

    getEmployees() {
        return this.employees;
    }
}

现在试试这个：

＆＃13;

class Employee {
  constructor(name, department) {
    this.name = name;
    this.department = department;
  }
  whoAreYou() {
    return `My name is ${this.name} and I am working in ${this.department} department`;
  }
}

class Manager extends Employee {
  constructor(name) {
    super(name, 'General');
    this.employees = [];
  }

  addEmployee(employee) {
    if (employee) this.employees.push(employee);
  }

  fireEmployee(employee) {
    this.employees.splice(this.employees.indexOf(employee), 1);
  }

  getEmployees() {
    return this.employees;
  }
}

class SalesPerson extends Employee {
  constructor(name, quota) {
    super(name, 'Sales', quota);
    this.quota = quota;
  }
}



let michael = new Manager('Michael');
let pam = new Employee('Pam', 'Marketing');
let jim = new SalesPerson('Jim', '1000');
let dwight = new SalesPerson('Dwight', '1200');

michael.addEmployee(pam);
michael.addEmployee(jim);
michael.addEmployee(dwight);

console.log(michael.getEmployees());

michael.fireEmployee(pam);

console.log(michael.getEmployees());

＆＃13;

Answer 2

如果您正在询问如何删除类实例以及数组，那么这就是解决方案。

fireEmployee(nameOfEmployee){
    var arrayIdx;
    for(var i=0;i<arr.length;i++){
     if(arr[i].name == nameOfEmployee){
       arrayIdx = i;
      }
    }
    delete arr.splice(arrayIdx,1); // removes from the array as well as the class instance
    }

并推送你可以使用函数中的推送方法arr.push(employeeClassInstance)

如何制作在Javascript中删除数组的方法

2 个答案: