JavaScript University Class: Department of management and operations

JavaScript OOP: Exercise-12 with Solution

Write a JavaScript program that creates a class called University with properties for university name and departments. Include methods to add a department, remove a department, and display all departments. Create an instance of the University class and add and remove departments.

Sample Solution:

JavaScript Code:

class University {
  constructor(name) {
    this.name = name;
    this.departments = [];
  }

  addDepartment(department) {
    this.departments.push(department);
    console.log(`Department "${department}" added to ${this.name}.`);
  }

  removeDepartment(department) {
    const index = this.departments.indexOf(department);
    if (index !== -1) {
      this.departments.splice(index, 1);
      console.log(`Department "${department}" removed from ${this.name}.`);
    } else {
      console.log(`Department "${department}" does not exist in ${this.name}.`);
    }
  }

  displayDepartments() {
    console.log(`Departments in ${this.name}:`);
    if (this.departments.length === 0) {
      console.log('No departments available.');
    } else {
      this.departments.forEach((department, index) => {
        console.log(`${index + 1}. ${department}`);
      });
    }
  }
}

// Create an instance of the University class
const university = new University('ABC University');

// Perform operations on the university
university.displayDepartments(); // Departments in ABC University: No departments available.

university.addDepartment('Science');
university.addDepartment('Mathematics');
university.addDepartment('Physics');
university.displayDepartments();
// Departments in ABC University:
// 1. Computer Science
// 2. Mathematics
// 3. Physics

university.removeDepartment('Mathematics');
university.displayDepartments();
// Departments in ABC University:
// 1. Science
// 2. Physics

university.removeDepartment('Chemistry');
// Department "Chemistry" does not exist in ABC University.

Sample Output:

"Departments in ABC University:"
"No departments available."
"Department \"Science\" added to ABC University."
"Department \"Mathematics\" added to ABC University."
"Department \"Physics\" added to ABC University."
"Departments in ABC University:"
"1. Science"
"2. Mathematics"
"3. Physics"
"Department \"Mathematics\" removed from ABC University."
"Departments in ABC University:"
"1. Science"
"2. Physics"
"Department \"Chemistry\" does not exist in ABC University."

Note: Executed on JS Bin

Explanation:

First we create a "University" class with properties for university name and departments. It includes methods to add a department, remove a department, and display all departments.

An instance of the University class (university) is created, and operations such as adding and removing departments are performed. The "displayDepartments()" method is used to display all departments of the university after each operation.

Flowchart:

Live Demo:

See the Pen javascript-oop-exercise-12 by w3resource (@w3resource) on CodePen.

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OOP Exercises Previous: Account management operations.