Q1181. What is the use of `setInterval()` in JavaScript?
`setInterval()` is a function in JavaScript that allows you to repeatedly execute a given function at a specified interval. It works by calling the function repeatedly wi...
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Q1182. What is a JavaScript object?
JavaScript object is a non-primitive data-type that allows you to store multiple collections of data. It is a container of key-value pairs in which value may be a variabl...
Q1183. What is the difference between dot notation and bracket notation when accessing properties of an object?
Dot Notation only allows static keys while Bracket Notation accepts dynamic keys. Static key here means that the key is typed directly, while Dynamic key here means that ...
Q1184. What is an object literal in JavaScript?
Object literal is a syntax for creating object in javascript in which property and method are inside of curly braces separated by comma. We assign a variable to an object...
Q1185. What is a JSON?
JavaScript Object Notation (JSON) is a standard text-based format for representing structured data based on JavaScript object syntax. It is commonly used for transmitting...
Q1186. What is Class in JavaScript?
Class is a template that can be used to create objects that share the same properties and methods. When an object is created from a class, it is called an instance of tha...
Q1187. What is the difference between a static method and an instance method in a class?
An instance method is a method that can be called on an instance of a class, and it can access and modify instance-specific data, like properties of the object. A static ...
Q1188. What is "this" in JavaScript Classes?
In JavaScript classes, `this` refers to the current object that is being worked on. It's like a placeholder for the object. For example, if you have a class that creates ...
Q1189. What is composition in classes in JavaScript?
Composition in class JS is a technique of building complex classes by combining smaller, more focused classes that represent specific behaviors or properties.Composition ...
Q1190. What is inheritance in classes in JavaScript?
Inheritance in classes in JavaScript is the ability to create a new class based on an existing class. The new class inherits all the properties and methods of the existin...