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Learn more about JavaScript with these informative articles, tutorials, and code snippets!

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How to Create a Simple Chat Room with JavaScript

This article walks through the steps of creating a simple JavaScript chat room with websockets and two server-side technologies.

3 Ways to Check if a Value is a Number in JavaScript

In this tutorial, we'll explore three different ways to check if a value is a number in JavaScript.

JavaScript Equalizer Display with Web Audio API

Create a JavaScript Equalizer that utilizes the Web Audio API, a high-level JavaScript API for processing and synthesizing audio.

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How to Crop Image Whitespace with JavaScript

In this tutorial, you'll learn how to crop an image with JavaScript, removing unnecessary whitespace from the image's edges progra

The 7 JavaScript Data Types with Examples

Learn about the seven JavaScript data types and how you can apply them in your web applications. Code examples included.

Get the Client's Timezone & Offset in JavaScript

Explore two effective methods for retrieving the client's timezone and offset using JavaScript and the International API.

Create A 2D Tile-Based Game with JavaScript

Learn how to create a 2D tile-based game with JavaScript containing no third-party plugins or libraries.

How To Slugify A String with JavaScript

This tutorial will show you how to convert any text string into a URL-friendly slug using JavaScript.

Difference Between let and var in JavaScript

Discover the difference between using the let and var variable declaration keywords in JavaScript.

setTimeout() vs. setInterval() in JavaScript

Explore the differences between the setTimeout() and setInterval() time-based functions in JavaScript.

Determine if a Date is Today's Date Using JavaScript

Determine if a specified date is today's date with the JavaScript Date object.

Copy to the Clipboard in JavaScript & Clipboard API

In this tutorial, you'll learn how to copy to the clipboard in JavaScript with the Clipboard API.

JavaScript Array Length Property: Getting & Setting

Learn how to get and set an array length in JavaScript, how to manipulate array elements and data, and how to empty arrays.

Enable Smooth Scrolling with JavaScript

Learn how to smooth scroll with JavaScript. Clean scrolling animations with no third-party libraries required.

Location Reload: How to Reload a Page in JavaScript

Learn how to reload a page programmatically with JavaScript and the Location.reload() method.

How to Wait for the DOM Ready Event in JavaScript

Learn how to wait for the DOM ready event in JavaScript.

JavaScript Comments: Improving Code Readability

Learn how to comment in JavaScript, how comments are used, and why they're important.

How to Get URL Parameters in JavaScript

Get URL parameters with ease using the JavaScript URLSearchParams interface. Parse and manipulate URL parameters.

Remove the Last Character From A JavaScript String

This tutorial will show you three different and simple methods for removing the last character of a string in JavaScript.

How to Create Multiline Strings in JavaScript

This tutorial will show you how to create clean multiline strings in JavaScript, making your code more readable.

How to Get the Current Timestamp in JavaScript

Learn what timestamps are and how to retrieve the current timestamp in JavaScript using the Date object.

Validate User Input with Regex in JavaScript

This tutorial will teach you how to validate user input with regular expressions in JavaScript.

How to Google Translate with JavaScript

Learn how to implement the Google Translate in JavaScript for translating page content into many different languages.

Format Numbers as Currency Strings in JavaScript

In this tutorial, you'll learn how to format numbers as currency strings in JavaScript using the Internationalization API.

How to Get the Last Array Element with JavaScript

In this quick tutorial, you'll learn a few different methods for retrieving the last element of an array in JavaScript.

How to Sort an Array of Objects in JavaScript

In this tutorial, we'll explore multiple ways to sort an array of objects in JavaScript and create a custom function.

JavaScript Date Difference Calculations

Learn how to calculate the difference between two dates using vanilla JavaScript.

How to Find & Remove Duplicates in JavaScript Arrays

In this tutorial, we'll discover how to find duplicates within an array in JavaScript, as well as how to remove the duplicates.

Filtering Array Values & Objects with JavaScript

This article covers the filter() method and how to filter values and objects using JavaScript.

How to Create a Simple Calculator with JavaScript

Learn how to create a simple calculator with JavaScript, CSS, and HTML, with the ability to add, subtract, multiply, and divide.

jQuery, AJAX & PHP Asynchronous Multiple File Upload

Learn how to chunk upload multiple files asynchronously in a single form submission using jQuery, AJAX, and PHP.

JavaScript Array: Push, Pop, Shift, Unshift & Splice

Learn how to alter and manipulate JavaScript arrays when using the push(), pop(), shift(), unshift(), and splice() methods.

jQuery Table Sorting: Sort Data on Header Click

Learn how to sort table data without plugins. All you need is jQuery and a few custom functions to get started!

JavaScript String Replacement: Simple Text & Regex

This article covers text and regular expression string replacement in JavaScript, one of the most common JS string operations.

JavaScript Promises: Resolve & Reject Code Examples

JavaScript Promises are a way of dealing with asynchronous operations and results, either with a resolve or reject callback.

Web Push Notifications in JavaScript with Push API

This article dives deep into implementing web push notifications with JavaScript and the Push API for the modern browser.

JavaScript Cookies: Get, Set, Delete & Security

Learn how to get, set, and delete cookies with JavaScript, as well as important cookie security features to take advantage of.

JavaScript includes() Method for Array Searching

The JavaScript includes() method determines whether or not an array contains a specific string or not, returning a boolean value.

Create a Random Number Generator with JavaScript

Learn how to create a random number generator with JavaScript, including how to generate a random number within a specified range.

JavaScript indexOf() Method for Arrays & Strings

Learn how to use the JavaScript indexof() method for returning array and string index values, character or word positions, etc.

Detecting Idle Browser Tabs: Page Visibility API

The Page Visibility API is a great resource for determining which of your browser windows or tabs are currently active or idle.

JavaScript Array map() Method: Arrays in JavaScript

Learn how to use the JavaScript Array map() method and how you can read, query, and transform array or page elements in an array.

How JavaScript Works: Engine, Runtime & Call Stack

Dive into a detailed overview of how JavaScript works, including details on the engine, runtime, call stack, and event queue.

localStorage vs. sessionStorage & Web Storage API

localStorage and sessionStorage are part of the Web Storage API, allowing you to save strings and key/value pairs locally.

JSON.parse() and JSON.stringify() with JavaScript

JSON.parse() and JSON.stringify() are powerful JavaScript functions used to parse and stringify objects and JSON strings.

The JavaScript forEach() Method for Array Looping

Learn how to use JavaScript's forEach() method to loop through array data and the benefits it provides versus an iterated loop.