JavaScript-QnA

What is BOM( Browser Object Model) ?

WebTech-FAQs

Last Updated: 22 April 2024

The Browser Object Model (BOM) is a fundamental component of web development. It includes a collection of objects and methods that enable in ...read more

How to write an Alert Box in JavaScript ?

Last Updated: 15 February 2024

In JavaScript, you can use the alert() function to display an alert box with a message to the user. The alert box typically contains a messa ...read more

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What is block scope in JavaScript?

Last Updated: 14 February 2024

Block scope in JavaScript refers to the scope of variables and functions that are defined within a block of code, such as within a pair of c ...read more

What is Deep Copy In JavaScript ?

Last Updated: 07 February 2024

In JavaScript, a deep copy refers to creating a completely independent duplicate of a complex data structure, such as an object or an array, ...read more

Difference Between Debouncing & Throttling in JavaScript

Last Updated: 07 February 2024

There are some key differences between throttling and JavaScript as listed in the below table: Debouncing ...read more

What is Reduce in JavaScript ?

Last Updated: 01 February 2024

Thereduce()method in JavaScript is used to reduce the array to a single value and executes a provided function for each value of the array ( ...read more

How to Implement Object Oriented Programming in JavaScript ?

Last Updated: 30 January 2024

The concept of Object Oriented Programming in JavaScript was introduced in ES6. Before ES6 JavaScript did not support the OOPs and it was a ...read more

How Hoisting works in JavaScript ?

Last Updated: 30 January 2024

In JavaScript, hoisting is a mechanism where variable and function declarations are moved to the top of their containing scope during the co ...read more

How to Handle Errors in JavaScript ?

Last Updated: 30 January 2024

Handling errors in JavaScript is crucial for writing robust and reliable code. There are several mechanisms and best practices for error han ...read more

How do we use the encodeURIComponent() function in JavaScript ?

Last Updated: 30 January 2024

The encodeURIComponent() function in JavaScript is used to encode special characters in a URL, ensuring that the resulting string can be saf ...read more

What are Primitive Data Types in JavaScript ?

Last Updated: 29 January 2024

Primitive data types are the built-in data types provided by all programming languages. Examples of primitive data types in JavaScript are s ...read more

What is an Object in JavaScript ?

Last Updated: 29 January 2024

An object in JavaScript is a non-primitive data type that is used to store multiple values of different primitive data types in the form of ...read more

What is Higher Order Function in JavaScript ?

Last Updated: 29 January 2024

A higher-order function is a function that can accept a function as one of its parameters and it can also return a function as its return va ...read more