JavaScript

Leveraging Web Scraping for Dynamic Pricing Strategies for E-commerce

How to leverage web scraping to enhance and optimize your e-commerce dynamic pricing strategy: benefits, challenges, and solutions.

Web Scraping in JavaScript: How to Scrape an E-Commerce Site

How to streamline E-Commerce web scraping with uninterrupted data gathering, effortless CAPTCHA bypass and automated proxy rotation.

8 Types of JavaScript Functions

Learn about the different types of JavaScript functions, including anonymous functions, arrow functions, and more

What Is the Difference Between Map and WeakMap

JavaScript provides many data structures for developers to choose from. Two of the most commonly used data structures in JavaScript are Map and WeakMap. Although both of these data structures have…

How to Find Elements in an Array in JavaScript

6 Different Ways to Find Values in an Array in JS

How to Append JavaScript Data to FormData

Append primitive values, arrays, objects, and files to a FormData in JavaScript. Follow this tutorial and become a FormData master!

Real-Time Image Processing using WebSockets and Flask in Python and JavaScript

Real-time image processing has gained a lot of importance in recent years due to its various applications. The applications range from facial recognition to autonomous vehicles. In this tutorial, we…

How to Rotate an Image with JavaScript

Be Careful of Passing an Async Function as a Parameter in JavaScript

TS 5.0 Beta: New Decorators Are Here!

TypeScript 5.0 Decorator, TypeScript ES Decorator, TypeScript Decorator, TypeScript Decorators, How To Use Decorators in TypeScript, Decorator in TypeScript, The Magic of TypeScript Decorators, typescript decorators guide, TypeScript 5.0, TS 5.0

It’s 2023 Now! React State Management: Context or Redux, Which Side Are You On?

Hi there. Today, I am going to discuss when to use what and why. Before I lay down my points and the foundation of my discussion, I would like to first get all of us on the same page about what…

How to add a key to an object in JavaScript

How to Download Files with JavaScript

Support for downloading files is a very common feature of web application. Over the past few years, I have developed this feature many times. In this article, we will learn how to download files…

How to Remove Undefined Values from Objects in JavaScript

I’ve often found myself working with data that contains undefined values. These values can cause issues with data manipulation and can lead to unexpected behavior in your code. In this article, I’ll…

How to Get Today's Date in JavaScript

A Beginner's Guide to OpenAI API in JavaScript

Learn how to use OpenAI API in JavaScript to build AI-enabled apps. This guide covers installation, authentication, and code examples. Enhance your projects with OpenAI's language and deep learning models.

Create a Multi-Page Job Application Form Using Angular

A step-by-step tutorial to building a multi-page job application form using Angular and SurveyJS, a free, open-source JavaScript library.

Check if string is Alphanumeric in JavaScript

In JavaScript, it is often necessary to check if a string is alphanumeric, which means it contains only letters and numbers and no other characters. This can be useful for validation purposes, such…

How to Find String Index in JavaScript

Best Tool for Web Scraping: BeautifulSoup vs. Regex vs. Advanced Web Scrapers

BeautifulSoup, Regular Expressions, or an advanced web scraper - which is the best tool for web scraping? A deep dive into web scraping using each.

Create an Employee Satisfaction Survey Using Angular and Store Results in a MongoDB Collection

A step-by-step tutorial to building an employee satisfaction survey using Angular and SurveyJS, a free, open-source survey library.

Creating JavaScript functions and web apps with GPT-3’s free code writer

The new wave of GPT “3.5” models also includes a more powerful davinci model, now version 003, and a new model specialized for writing code, called code-davinci-002. For the moment, this model is…

How to Fix the “Cannot access before initialization” Reference Error in JavaScript

How to Add an Event listener for When an Element Becomes Visible with JavaScript?

The options object has the rootMargin which is the margin for when the element is considered to be visible. We pass in a callback into IntersectionObserver which runs when the element we’re watching…

How to Check if a Value is Within a Range of Numbers in JavaScript

We can use the JavaScript’s greater than or equal to and less than or equal to operators to check if a number is in between 2 numbers. We can use the JavaScript’s greater than or equal to and less…

How to Check if a String Contains Uppercase Letters in JavaScript

Learn how to easily check if a string contains capital letters in JavaScript.

How To Store JSON Data In Local Storage - JS, React, Angular

Learn how to store data in localStorage in JavaScript, React, or Angular.

How to Create an Amazon Product Search API with Data Collectors

How to scrape data from amazon.com with Bright Data's Web Scraper IDE, and create a product search API that you can deploy to the web and monetize it.

How to Build and Deploy a Cloud Native App

Build, Deploy and Run a Cloud-Native Application, built with JavaScript, Klotho, and AWS

Centralized Error Handling in NestJS

A guide on how to handle all errors in a NestJS application.

Passing Arguments to Event Listeners in JavaScript

JavaScript essentials that you might not know about

How to Remove Duplicates From an Array of Objects in JavaScript

JavaScript: How to Add and Remove Event Listeners

What is the purpose of event listeners? Event Listeners ensure your page responds accordingly when a specific action occurs.

How to Build Your Own Surveys & Extend Them with Custom JavaScript

A primer on how to use your own JS functions, to augment the conditional logic and validators SurveyJS ships with.

Building A Beautiful Link Preview With Web Components

Recently, I improved the design of my Web Highlights app's dashboard by showing a link preview for each highlighted page. Here is what the new design looks like: In this article, I want to share how…

Create a Ping Pong Game Using JavaScript

Learn how to make a ping pong game with JavaScript and HTML

Create a Pre-commit Git Hook to Check and Fix Your JavaScript/TypeScript Code Automatically

In this post, we will introduce how to create a Git pre-commit hook to check JavaScript/TypeScript code using ESLint, Prettier, lint-staged, and Husky.

Build a Sudoku Solver App With JavaScript

A JavaScript app to solve sudoku puzzles using backtracking

How to Retry Requests Using Axios

A tutorial on using the Axios interceptor to retry requests.

SurveyJS: Why It Is Better Than Your Average JavaScript Survey Library

5 ways in which SurveyJS, a free and open-source library, does so much more than just build surveys.

How to Convert Minutes to Hours and Minutes in JavaScript

Learn how to easily convert separate a number of total minutes into full hours and remaining minutes in JavaScript.

How to Automate Patient History with SurveyJS

Instantly elevate the standard of care of your patients while remaining HIPAA compliant.

How to Check if a String Contains Only Letters and Numbers in JavaScript

Learn how to easily check if a string contains only letters and numbers in JavaScript.

How to Download a File Using JavaScript

Download files using the File Blob

Scope Chain & Lexical Environment in JavaScript

Understanding what scope chain and lexical environment are in JavaScript.

The Latest ES13 JavaScript Features

Convert Time From AM/PM to 24-Hour Format Using JavaScript

A tutorial on converting time from AM/PM to 24-hour format using JavaScript.

How to Find the Odd Numbers in an Array with JavaScript

Why You Should Use SurveyJS Instead of Google Forms

SurveyJS has speed, customization, and scalability in a free and open-source package

JavaScript Dot Notation vs. Bracket Notation: Which to Use When

The difference between Dot Notation & Bracket Notation, and when you should use each one.

Make a Rich Text Editor with JavaScript in 5 Minutes

Making rich text editor in 100 lines of code

5 Free Courses for Students to Learn JavaScript in 2022

27 JavaScript Data Visualization Libraries for 2022

Libraries for beautiful charts, graphs, and data visualization for your JS applications.

How to Upload Large Files Using Plain JavaScript

A guide on implementing a large file upload and breakpoint resume — solving an interview problem.

What is “void 0” in JavaScript?

Is it similar to undefined? Should we avoid it or not?

How to Use the JavaScript Nested Ternary Operator

2 JavaScript Approaches to Encode/Decode HTML Entities

No plugins required. 2 strategies — (1) A <textarea> HTML element & (2) Regex pattern implementations.

How to Change an HTML Selected Option Using JavaScript

A tutorial on changing an HTML selected option with JavaScript.

Destructuring Function Parameters in JavaScript

An introduction to destructuring function parameters for beginners

How to Convert a Date String to Timestamp in JavaScript?

Different ways of converting a date string to a timestamp in JavaScript.

How to Make a JavaScript Function Wait Until an Element Exists Before Running it?

Enable HTTPS for Localhost During Local Development in Node.js

A tutorial on how to go from http://localhost:PORT to https://localhost:PORT.

How to Convert the Number of Seconds to a Time String in the hh:mm:ss Format with JavaScript?

How to Declare Static Constants in ES6 Classes?

Best YouTube Channels to Learn JavaScript

Part 2: Continuation of the exploration of JavaScript YouTube world.

7 JavaScript Libraries for Data Manipulation, Visualization, and Machine Learning.

7 cool awesome open-source Javascript projects and packages listed in the npm registry to do data science, machine learning, and artificial intelligence.

How Students Can Easily Do JavaScript Homework

The JavaScript ?? (Nullish Coalescing) Operator: How Does it Work?

How to Detect Arrow Key Presses in JavaScript?

A guide on how to detect arrow key presses in JavaScript.

JavaScript Algorithm to Check for a Perfect Square Number

Checking if a number is a perfect square

The Simplest Guide to Using Async/Await with forEach() in JavaScript (with Examples)

Using async/await with forEach() does not need to be a nightmare! Here are 4 solutions to your problem.

Advanced Angular Interview Questions You Must Prepare For in 2022

Latest Angular Interview Questions

10 Primary Skills You Need to Possess to Become a Front End Web Developer Within JavaScript

18 JavaScript CSS Scroll Effects For Website

In today’s article, I will introduce you to scroll effects built with HTML, CSS, JavaScript to help attract users’ attention as well as create interesting feelings when customers use the website! I…

The Basic Vanilla JavaScript Project Setup

Here's how to get started with your next Vanilla JS project

12 Important JavaScript Functions Every Web Developer Should Know

Everything you learn here will speed up your development and save your valuable time!

Build a Dark Mode Toggle with JavaScript and localStorage

A brief article explaining how to build a dark mode toggle switch using JavaScript and localStorage.

How to Modularize Code in Vanilla JavaScript using 'import' and 'export'

How to Get and Set the Value of a Data Attribute with JavaScript

How to get and set the value of the `data-id` attribute of an element with JavaScript.

Bun: The Bundler You Need to Know As a JavaScript Developer in 2022

Znote: A markdown and JavaScript Lab inspired by Jupyter Notebook

Markdown and JavaScript Lab inspired by Jupyter

How to Get Distinct Values From an Array of Objects in JavaScript?

How to Set Timeout with the JavaScript Fetch API using AbortController

How To Create and Download Files in the Browser With Vanilla JavaScript

I wondered how easy it is

How to Loop Through a Date Range with JavaScript?

3 Ways To Store Data in the Browser

Cookies, local storage, and session storage

How to Match an Exact String with JavaScript

Essential JavaScript Interview Coding Questions

How to Create and Style a div Using JavaScript?

How to Replace Text Inside a div Element with JavaScript?

How to Disable Dragging an Image from an HTML Page

You can download the “Download Restricted” files as PDF (Google Drive)

How to download “restricted” files as PDF from Google Drive using jspdf.

How to Handle Unsuccessful Fetch API Calls in JavaScript

4 Reasons Why ‘var’ is Considered Obsolete in Modern JavaScript

JavaScript is a powerful language because you can write an entire software without adopting any other programming language at all. var used to be a way to declare variables in JavaScript. However…

WebAssembly vs JavaScript: Can WASM Beat JavaScript In Benchmark?

Many people think WASM is lightning fast and will eliminate JavaScript eventually. However, there are a few points to consider.

How To Copy/Paste Text Into Clipboard Using JavaScript

How to Handle Database Deadlock in Sequelize

Let's Build a Website Login Page with HTML, CSS, JavaScript and an External API

Creating Invoices in Javascript and Node.js

In this article we are going to create an invoice in NodeJS in the most easy way possible. We will be using the NPM library EasyInvoice.

Array Destructuring in JavaScript: A Comprehensive Beginner's Guide

A Guide to Nested Promises, Anti-Pattern, and Alternatives

How to Detect the Closing of a Browser Tab

JavaScript Interview Preparation Guide (50 Output related questions)

Frontend Developer Cheat sheet

How to Setup Path Resolving in Vite

Create a browser-agnostic PWA install button

The whole point of PWAs is that they work everywhere. So an install button should by definition be browser-agnostic. Here is how to build the perfect PWA install button.

Number Base Conversion in JavaScript

Converting from one base to another in JavaScript is easier than you thought

A Guide to Asynchronous Array Iterator Functions

For Map, Reduce, Filter, Every, and Some

How to create a Rotation Animation in React Native

In this tutorial, I’ll show you how to create a button that rotates 720 degrees when it’s pressed. We will be using the React Native Animated animation system to create the rotation animation. First…

How to Get the ID of the Clicked Element in the JavaScript Click Handler?

JavaScript Algorithm: Convert String Characters into ASCII

Create a function that will return an array containing the ASCII codes of each character from a string.

JavaScript Data Structure Interview Questions (and Answers)

JavaScript: How To Intercept Function and Method Calls

Intercepting function or method invocation in JavaScript. Monkey-patching or proxies. Let’s talk about that.

Build a Video, Audio + Screen Recorder Web App with JavaScript

JavaScript Error and Exception Handling

Easiest Way to Find the Most Frequent Element in Array

Build a Captcha Generator Using JavaScript

How To Check If A Variable Is A Number In JavaScript

Here are 3 ways that you can check

How to Count Page Views With The Count API

An easy way to count your page views with JavaScript.

Create an Array of Alphabet characters in JavaScript with this simple trick

Which type of loop is fastest in JavaScript?

Learn which for loop or iterator suits your requirement and stops you from making silly mistakes that cost your app performance.

What is the Difference Between Java and JavaScript?

JavaScript Frameworks, Performance Comparison 2020

The ultimate performance battle between JavaScript frameworks

Creating a Simple Accordion with HTML, CSS and JavaScript

A simple guide on how to build an accordion

How performant are Array methods and Object methods in JavaScript?

Analysing the Big O of various Array and Object methods

Ways to Solve the Classic Two Sum Algorithm Question with an Explanation on Big-O

Keep reading to find out how this Ferrari applies to Big-O!

How to Add Emoji to Your Angular application

Nowadays, it is impossible to escape emojis. We are surrounded by smilies that express our feelings or have the sole purpose of shortening our sentences. Whether you are laughing 😂 or whether the…

How to Use Axios in Vanilla JavaScript

Learn about Axios with practical examples

4 Ways to Check if the Property Exists in JavaScript Object

A Complete Guide to Upload JSON files in Amazon S3 using AWS Lambda

For uploading files in S3, we have to follow some steps. Let's start doing these steps.

How To Add, Modify and Delete JavaScript Object Literal Properties

5 Ways to Convert String to Array in JavaScript

JavaScript Algorithms: Valid Parentheses (LeetCode)

Are JavaScript for loops better than filter() and forEach?()

Over the last few years, the methods in ES6 like filter(), forEach() and map() have been ever so popular. But are they actually better?

How to Show a Loader Until the Fetch API Has Finished Loading the Page

Building a Rock Paper Scissors Game with JavaScript

Let's Build a Rock Paper Scissors Game Using Vanilla JavaScript

How to Store Login Sessions with LocalStorage and SessionStorage

Save Current LoggedIn user in SessionStorage and information of all the users from LocalStorage, all using plain JavaScript!

JavaScript Algorithms: Integer to Roman (LeetCode)

Prettier — The Formatting Big Brother of ESLint

Empowering developers through Prettier's automatic code formatting

Easy table sorting with JavaScript

A simple technique for static or dynamic sites

4 Ways to Create a Modal Popup Box with HTML, CSS and Vanilla JavaScript

How I dealt with over 30,000 ESLint errors

ESLint — Migrating to a Comprehensive Configuration

ESLint — A Proofreader for your Code

A practical guide to setting up and using ESLint

6 Browser APIs You Need To Know As A Front End Developer

Browser APIs (or web APIs) are the APIs that come built-in with the browsers. They allow developers to perform complex operations without dealing with the sophisticated lower-level code. There are a…

Creating a dynamic HTML table with JavaScript

A guide to creating a React app without create-react-app

Creating a React App from scratch

WebGL Frameworks: Three.js vs Babylon.js

Battle for the Best WebGL Frameworks: the Story as I Told It

How to build a website with only JavaScript

How to Build a Search Bar with JavaScript

A quick walkthrough on how to build a search bar feature with JavaScript

How to Create a Slider in JavaScript

Learning Web Development in Practice

How to use NPM (and import/export modules) in JavaScript

Add Custom Markers with the Google Maps JavaScript API

An updated solution on how to add Google Maps to your website using JavaScript and tweaking it with customer markers

10 Tricky JavaScript Coding Interview Questions (And Solutions)

6 Interview Questions That Combine Promise and setTimeout

Thoroughly master this type of interview question.

Base64 Encoding in JavaScript

Including upload an image using base64 in JavaScript

Make your own YouTube Downloader

JavaScript Coding Practice Challenges — Strings

Problems and Solutions in JavaScript

Why you can't break a forEach loop in JavaScript

No break in ForEach()

Everything you need to know about HTML5 local storage and session storage

Understand it by building actual practical applications

Convert String to Different Case Styles: Snake, Kebab, Camel and Pascal Case in JavaScript

Conversion from string to different ways of word combination in JavaScript.

Insert an Element in Specific Index in JavaScript Array

Learn how to insert an element in specific index in array.

Closing a Window with JavaScript

What works, what doesn't, in a nutshell

Using JavaScript and window.postMessage()

Safe Cross-Domain Communication

ES6: What is the difference between Rest and Spread?

Rest Parameter [ …rest]

ES6: Arrow Functions

How to Detect a Sequence of Keystrokes in JavaScript

How to use Async Await in JavaScript

There are many ways JavaScript provides us with the ability to make it behave like an asynchronous language. One of them is with the Async-Await clause.

Module Pattern in JavaScript

JavaScript Developers need to understand Core Patterns

What is the best way to call a REST API from JavaScript?

what-is-the-best-way-to-call-a-rest-api-from-javascript-79a901414447

Understanding The Set Object in JavaScript

Learn about the Set object with practical examples

Understanding Nested Arrays in JavaScript

7 Beginner-Friendly Projects Using APIs and JavaScript

Some amazing beginner Friendly Web development Projects using APIs.

Top 5 JavaScript Animation Libraries for Your Next Project

Best JavaScript libraries to use in your next animation project

Top 10 JavaScript Frameworks for Server Side Development in 2020

A curated list of the most essential back-end JavaScript frameworks

How to Retrieve All Data via Paginated API Calls in Vanilla JavaScript

No plugins. Two Approaches —1. Recursion, 2. Iteration to aggregate data chunks.

Send Emails From Your Website With EmailJS

Are you struggling with the behind code of your website contact form, then let this article be your life-saver.

JavaScript Frameworks for building Desktop Applications

Best JavaScript Frameworks that can be used to create desktop applications

JavaScript Algorithm: Distance Between Points

Create a function to calculate the distance between two points defined by their x and y coordinates.

It is really easy to convert local time to UTC in JavaScript

Do you feel the need for a library even for a small task like converting local Date to UTC format?

How to Use Regular Expression to Get Strings Between Parentheses with JavaScript?

A tutorial on how to use regular expressions to get strings between parentheses with JavaScript.

How to Initialize a JavaScript Date to a Particular Time Zone?

Sometimes, we may want to initialize a JavaScript date to a particular time zone. The default time zone is UTC.

How To Convert Any Function To An Arrow Function In JavaScript

Same results, less code. Learn the process of converting any type of traditional JavaScript function into an arrow function to make your code more compact and powerful.

Comparing Objects in JavaScript

What works, what doesn't and why

Algorithms — Diagonal Difference Solution using JavaScript: HackerRank

Given a square matrix, calculate the absolute difference between the sums of its diagonals.

An Introduction to Kafka with TypeScript using NestJS

A practical way to introduce you into Kafka, KafkaJS, NestJS micro-services with real examples.

8 on Scroll Animation JavaScript Libraries You Can Consider

Create awesome scroll-triggered animations on elements on your website.

5 Useful Tricks JavaScript has been Hiding from You

A little guide that might benefit you

5 tricky JavaScript problems to check before your next interview (Part 1)

I hope you have not blown your interview just yet because you got caught off-guard with some strange problems you've never seen before.

5 Best COVID-19 CodePens in HTML, CSS, and JavaScript

4 Useful JavaScript ES2020 Features that You Should Know

Powerful ES2020 Features that you should know.

13 Methods To Remove/Filter an Item in an Array (and Array of Objects) in JavaScript

Latest JavaScript Coding Interview Questions and Answers 2021

Create a Config File for Your JavaScript Project Like a Pro

Why do we need a config file and how to create it?