Q1001. What is the purpose of `super()` in JavaScript classes?
The `super()` keyword in JavaScript is used to call a method or constructor of a parent class from within a subclass. It allows a subclass to inherit and use functionalit...
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Q1002. What is a private class field in JavaScript?
A private class field in JavaScript refers to a class field that is only accessible within the class in which it is defined. It cannot be accessed or modified from outsid...
Q1003. Can you explain the concept of encapsulation in JavaScript classes?
Encapsulation is a concept in object-oriented programming that refers to bundling data and methods within a single unit, such as a class, and hiding the internal details ...
Q1004. What is `get` keyword in JavaScript classes?
The `get` keyword is used to define a method that retrieves the value of a property. When the property is accessed, the `get` method is automatically called, and its retu...
Q1005. What is `set` keyword in JavaScript classes?
The `set` keyword is used to define a method that sets the value of a property. When the property is assigned a value, the `set` method is automatically called, and it ca...
Q1006. Can you explain the concept of instance variables in a class in JavaScript?
In JavaScript, instance variables are properties of an object that are specific to an instance of a class. When we create a new instance of a class using the `new` keywor...
Q1007. What is the difference between a class and a function in JavaScript?
functions and classes are both important tools in JavaScript for defining reusable code, but they serve different purposes. Functions are used to encapsulate logic and pe...
Q1008. What is abstract class in JavaScript?
In JavaScript, an abstract class is a blueprint for creating other classes that share some common properties and methods. However, unlike regular classes, abstract classe...
Q1009. How would you convert an object to a JSON string in JavaScript, and vice versa?
In JavaScript, you can convert an object to a JSON string using the `JSON.stringify()` method, and you can convert a JSON string back to an object using the `JSON.parse()...
Q1010. What is the difference between a class and an interface in JavaScript?
Classes and interfaces are both used in JavaScript to define object types, but serve different purposes. A class defines a blueprint for creating objects that have proper...