JavaScript

In this tutorial, we will be using Phaser.js to create a platform game. The objective of the game is for the player to move around, collect stars, and reach the end. Let’s get started! Setup the Project To begin, make sure you have an empty folder and run the following commands: npm init -y This will initialize a minimal package.json file for your project. Then, install Phaser by running: npm install phaser If you haven’t already, install Parcel (a bundler) by running:...

When it comes to copying objects in JavaScript, it can get tricky, especially if you want to perform a deep clone. Deep cloning ensures that not only the primitive types like numbers and strings are copied, but also the referenced objects are recursively copied to create a completely independent cloned object. In this blog post, we will explore different options for deep cloning a JavaScript object. Deep Copy vs Shallow Copy A shallow copy in JavaScript only copies the references to external objects, while a deep copy also copies the referenced objects....

Deep copying JavaScript objects has historically been a challenge, often requiring workarounds that were prone to bugs. One common method was using JSON.parse(JSON.stringify(obj)), which ignored certain types and could introduce reference-based copying issues. However, with the introduction of structuredClone(), a DOM API method, deep copying has become easier and more reliable. Using structuredClone() The structuredClone() method is not part of the JavaScript language itself, but it is available as part of the DOM API....

Discover an easy way to determine if a Date object represents the current date and time. To determine if a JavaScript Date object instance represents the current date, you can compare the day, month, and year of the date to the current day, month, and year. This can be achieved using the getDate(), getMonth(), and getFullYear() methods of the Date object. The current date can be obtained by using new Date()....

In JavaScript, there are various built-in types such as numbers, strings, booleans, and objects. You might often encounter situations where you need to determine the type of a value. Fortunately, JavaScript provides us with the typeof operator to accomplish this task. To use the typeof operator, simply write the keyword typeof followed by the value or variable you want to check. Let’s take a closer look at how this works:...

Learn how to programmatically disable or enable a button using JavaScript. An HTML button is one of the few elements that has its own state, along with almost all the form controls. There are many scenarios where it is necessary to disable or enable a button using JavaScript. For instance, you may want to enable the button only when a text input element is filled, or when a specific checkbox is clicked (e....

In this tutorial, we will discuss how to disable specific ESLint rules in your code. Sometimes, your tooling may automatically set certain ESLint rules, such as the no-debugger and no-console rules. While these rules may be useful for production code, they can be restrictive during development when you need to access the browser debugger and the Console API. To disable these rules, you have several options: Disabling Rules for a Whole File To disable one or more specific ESLint rules for an entire file, you can add the following comment at the top of the file:...

Dividing an array into two equal parts, exactly in the middle, can be accomplished using the slice() method of the Array instance in JavaScript. Here’s how you can do it: const list = [1, 2, 3, 4, 5, 6]; const half = Math.ceil(list.length / 2); const firstHalf = list.slice(0, half); const secondHalf = list.slice(half); In the code above, we first calculate the index at which the array should be divided. We use Math....

Discover the technique for dynamically importing JavaScript modules Have you ever encountered a scenario where you needed to load a JavaScript module dynamically? Perhaps you are attempting to load a module from a folder, but you are unsure of the folder’s name because it is generated dynamically. However, using code like this would not work: import test from folder + '/test.js' or import test from `${folder}/test.js` In such cases, you need to employ a technique called dynamic import....

In JavaScript, there are multiple approaches to emptying an array. This blog post will discuss a couple of commonly used methods for clearing an array and emptying all its elements. Method 1: Setting the Array Length The easiest way to empty a JavaScript array is by setting its length to 0. This method works for both const and let declarations. Here’s an example: const list = ['a', 'b', 'c']; list.length = 0; By changing the length of the array to 0, all its elements are automatically removed....