Creating a subclass in JavaScript involves extending a base class to inherit its properties and behaviors, allowing for the creation of a more specific version of the class. This process of defining subclasses enables a hierarchical relationship that embodies the principles of object-oriented programming. What is subclassing in JavaScript? Subclassing is the practice of creating… Continue reading How to Create a Subclass in JavaScript
Category: JavaScript
What is an Inline Function in JavaScript?
An inline function in JavaScript is a function defined within the scope of another function and created at runtime. It allows for the definition of functions that can be used on-the-fly without the need for a separate function declaration. Understanding inline functions Inline functions in JavaScript are often defined within another function’s body and do… Continue reading What is an Inline Function in JavaScript?
JavaScript Map Size Property
The JavaScript Map object’s size property returns the number of key/value pairs in the map. It provides an efficient way to determine the count without the need to iterate over the entire map. It’s useful for things like: Validating the number of entries before performing operations. Checking map capacity against thresholds. Implementing logic that depends on the count of… Continue reading JavaScript Map Size Property
How to Scroll Automatically to the Bottom of a Page in JavaScript
Automating page scrolling in JavaScript is a solid way to deal with long content that updates in real-time. The kind of behavior is common in apps with feeds where the newest content appears at the bottom of the page, like in chats. This guide explains how to detect the bottom of a page or div and simulate… Continue reading How to Scroll Automatically to the Bottom of a Page in JavaScript
How to Sort JavaScript Objects by Key | Basedash
Sorting JavaScript objects by key involves arranging the property keys of an object in a specific order. You would usually do this to improve readability or to prepare the object for operations that require a particular key order, like comparison or output formatting. Understanding the Basics JavaScript objects are collections of properties, where each property… Continue reading How to Sort JavaScript Objects by Key | Basedash
Replace + with Space in JavaScript
This guide walks you through how to replace the + sign with a space in a string, a common requirement when dealing with URL query strings. What is String Replacement? You would use the String.prototype.replace() to search a string for a specified value, or a regular expression, and return a new string with the specified values replaced. const queryString… Continue reading Replace + with Space in JavaScript
What is evented I/O for V8 JavaScript?
Evented I/O for V8 JavaScript is the core design principle behind Node.js, enabling non-blocking, asynchronous operations. It lets JavaScript code perform I/O operations without waiting for each to complete, which can make applications more efficient and performant. Understanding evented I/O Evented I/O is built around events and callbacks. When an I/O operation is initiated, it… Continue reading What is evented I/O for V8 JavaScript?
How to Sort Object Array by Boolean Property in JavaScript
Sorting an object array by a boolean property in JavaScript can be efficiently accomplished by leveraging the sort() method. This guide will demonstrate the process using clean, idiomatic examples suitable for any level of engineering expertise. Understanding the sort method JavaScript arrays have a built-in sort() method that allows for custom sorting logic via a comparator function. When sorting… Continue reading How to Sort Object Array by Boolean Property in JavaScript
Structs in JavaScript
JavaScript doesn’t have a dedicated struct keyword like C or C++, but structures can be mimicked using objects. This guide covers how to create data structures akin to structs using JavaScript objects, harnessing prototypes for methods, and incorporating user input to populate these structures. How to define a struct in JavaScript In JavaScript, the closest entity… Continue reading Structs in JavaScript
React’s useState Hook
what is useState ? useState is a special function in React that allows functional components to use and manage state. Before hooks were introduced, state management was exclusive to class components, but with hooks, functional components can also keep track of their own state. Basic Syntax import React, { useState } from ‘react’; function ExampleComponent()… Continue reading React’s useState Hook