javascript-basics

130+ posts

Last Updated: 09 April 2024

The JavaScript var statement declares variables with function scope or globally. Before ES6, var was the sole keyword for variable declarat...read more

Web Technologies

JavaScript

javascript-basics

JavaScript Variables

Last Updated: 26 March 2024

Variables are used to store data in JavaScript. Variables are used to store reusable values. The values of the variables are allocated using...read more

Web Technologies

JavaScript

javascript-basics

How to submit a form or a part of a form without a page refresh using jQuery ?

Last Updated: 31 October 2021

In this article, we will learn how to submit a form or a part of a form without a page refresh using JQuery, will understand its implementa...read more

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What is the first class function in JavaScript ?

Last Updated: 20 December 2023

First-Class FunctionA programming language is said to have First-class functions if functions in that language are treated like other variab ...read more

What is the difference between Microtask Queue and Callback Queue in asynchronous JavaScript ?

Last Updated: 23 February 2023

To know the difference between Microtask Queue and Callback Queue, we need to have a clear idea of how does asynchronous JavaScript gets exe...read more

Variable Shadowing in JavaScript

Last Updated: 28 March 2023

Block Scoping: To understand shadowing in JavaScript, we need to be clear with the scope first. In computer programming languages, Scope is ...read more

JavaScript SyntaxError - Unexpected token

Last Updated: 31 July 2020

This JavaScript exceptions unexpected token occur if a specific language construct was expected, but anything else is typed mistakenly. This ...read more

Web Technologies

JavaScript

javascript-basics

How to detect network speed using JavaScript?

Last Updated: 16 July 2020

To detect the network speed using javascript, we will use the following approach.Approach: Open the web page for which you want to know the ...read more

What does enumerable property mean in JavaScript?

Last Updated: 19 December 2022

An enumerable property in JavaScript means that a property can be viewed if it is iterated using the for...in loop or Object.keys() method. ...read more

JavaScript Promise allSettled() Method

Last Updated: 10 January 2024

Promise.allSettled() method in JavaScript is used to handle multiple promises concurrently and return a single promise. This promise is fulf ...read more

JavaScript While Loop

Last Updated: 04 March 2024

In JavaScript, a while loop is a control flow statement that repeatedly executes a block of code as long as a specified condition evaluates ...read more

JavaScript break and continue

Last Updated: 20 November 2023

Break statementThe break statement is used to jump out of a loop. It can be used to "jump out" of a switch() statement. It breaks the loop a ...read more

Javascript Error and Exceptional Handling With Examples

Last Updated: 24 May 2023

An error is an action that is inaccurate or incorrect. There are three types of errors in programming which are discussed below:Syntax error...read more

Last Updated: 28 December 2023

In this post, a timer has been shown that shows the countdown, and its color/message gets changed after every specific period. Prerequisite...read more

Understanding basic JavaScript code

Last Updated: 08 December 2022

Inserting JavaScript into a webpage is much like inserting any other HTML content. The tags used to add JavaScript in HTML are script and /s...read more

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