Web Development

Sandeep Mandal December 28, 2024 No Comments

What is useEffect hook in React and how to use it?

The useEffect hook in React is used to handle side effects in functional components, such as: Fetching data from an API. Manipulating the DOM. Setting…

Saikat Mondal December 21, 2024 No Comments

ReferenceError: prompt is undefined. How would I fix this in JavaScript?

To fix this issue prompt is not defined in VS code or prompt is not working, You can follow these steps –1. Open your terminal…

Snigdha Paul December 21, 2024 No Comments

What is the difference between (?=) and (?<=) in regex?

(?=) is used to check if a string (which we want to match) is followed by another string or not.(?<=) is used to check if…

Anirban Poddar December 21, 2024 No Comments

How to use for…in loop in Javascript ?

The for...in loop is used to iterate through the keys of an object. Syntax of JavaScript for…in Loop for (key in object) { // body…

Sandeep Mandal December 21, 2024 No Comments

What is the use of Array.some() method in JavaScript?

Usage: The JavaScript Array some() method is used to check if any elements in an array pass a test provided by a specified function. Example:…

Saikat Mondal December 14, 2024 4 Comments

What are WordPress Security Headers ?

WordPress security headers are HTTP response headers that help control the behavior of web browsers and improve website security. These headers are sent from the…

Anirban Poddar December 14, 2024 2 Comments

How to use for…of loop in array, string & map in Js?

JavaScript for...of loop allows you to iterate arrays, maps, strings etc. The for...of loop cannot be used to iterate over an object. iterable – an iterable object (array,…

Sandeep Mandal December 14, 2024 No Comments

What is the use of Array.from() method in JavaScript?

Usage: The Array.from() method is used to get an Array object from any iterables like array, objects, and strings. Example: const arr = Array.from( "Sandeep"…

Snigdha Paul December 14, 2024 No Comments

How to match a pattern which must be preceded by a specific string?

Lets see with an example : We want to search a string “final” which must be preceded by “semi“. Here is two strings below:finalsemifinal Regex…

Snigdha Paul December 7, 2024 No Comments

Why we use (?<!…) instead of (?!…) while matching a pattern which should not be preceded by a specific pattern?

Lets see through example. We have two strings below ,Out First is Hello World. How is it?Out First is Hi World. How is it?I want…

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