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Object getter & setter

In JS, getter & setter allow you to define how to access and update the properties of an object.

Here are key points:

get: It has a return value and doesn't take any arguments.
set: It takes one argument and doesn't return a value.
In JavaScript, the split() method is used to divide a string into an array of substrings, based on a specified separator or delimiter. The original string remains unchanged.

get & set


const Person={
    firstName:"JOhn",
    lastName:"Doe",

    get fullName(){
        return `${this.firstName} ${this.lastName}`;
    },

    set fullName(name){
        let parts=name.split(" ");
        //console.log(parts[0]);
        this.firstName=parts[0];
        this.lastName=parts[1];

    }
}
console.log(Person.fullName);//output:JOhn Doe
Person.fullName="Shah sultan";
console.log(Person.fullName);//output:Shah sultan

🌐Application🈸

Custom Access Control

A user management system that restricts access to sensitive information based on user roles.


const user = {
    _role: 'user',
    _salary: 50000,

    get salary() {
        if (this._role === 'admin') {
            return this._salary;
        } else {
            console.error("Access denied: Only admins can view salaries");
            return null;
        }
    }
};

user._role = 'user';
console.log(user.salary); // Output: "Access denied: Only admins can view salaries"

user._role = 'admin';
console.log(user.salary); // Output: 50000

Data Validation


const user = {
    _age: 0,

    get age() {
        return this._age;
    },

    set age(value) {
        if (value > 0) {
            this._age = value;
        } else {
            console.error("Age must be a positive number");
        }
    }
};

user.age = 25; // Valid input
console.log(user.age); // Output: 25

user.age = -5; // Invalid input, triggers validation
// Output: "Age must be a positive number"