JavaScript

The JavaScript substring() method is a useful tool for extracting a portion of a string. Similar to the slice() method, it has some distinct differences that set it apart. Usage and Syntax The syntax of the substring() method is as follows: string.substring(startIndex, endIndex) startIndex is the index at which the extraction should begin (inclusive). endIndex is the index at which the extraction should end (exclusive). Key Differences There are a few key differences between the substring() method and the slice() method:...

When developing with classes in JavaScript, you often come across the super keyword. In this blog post, let’s explore the purpose and usage of super. Let’s start with a simple example. We have a class called Car: class Car { constructor() { console.log('This is a car'); } } The constructor method in a class is special because it is executed when the class is instantiated. For example: const myCar = new Car(); //'This is a car' Now, let’s say we have a class called Tesla that extends the Car class:...

In JavaScript, the switch conditional is a useful alternative to the if/else statement when you have multiple options to choose from. It helps simplify your code and make it easier to read. To use the switch conditional, you start by defining an expression that determines which case to trigger. Here’s the basic syntax: switch(<expression>) { // cases } Each case is defined with the case keyword, followed by a value and a colon....

In JavaScript, the toLowerCase() method is used to convert the characters in a string to lowercase. This method returns a new string with all the characters converted to lowercase. It is important to note that the original string is not mutated or changed in any way. The toLowerCase() method does not accept any parameters. It simply operates on the string that it is called upon. Here is an example of how to use the toLowerCase() method:...

In JavaScript, call() and apply() are two functions that serve a specific purpose: calling a function and setting its this value. To fully grasp their functionality, it is important to have a good understanding of the this variable in JavaScript. You can refer to my comprehensive “this” guide to gain in-depth knowledge about this particular variable. The this value in a function is determined by the environment and normally cannot be altered from the outside....

In JavaScript, the values() method of the Object object is a powerful tool that allows you to easily fetch all the property values of an object. This method returns an array containing all the values of the object’s own properties. Usage: To better understand how the values() method works, let’s look at a couple of examples: Example 1: Retrieving Values from an Object const person = { name: 'Fred', age: 87 }; Object....

Recently, I’ve been exploring Vite, which is often referred to as “the new create-react-app”. While there are many tools that serve a similar purpose, such as Parcel, esbuild, Rollup, Rome, webpack, and Turbopack, Vite stands out in its unique approach. Vite describes itself as a “next-generation frontend tool”. It functions as a module bundler like webpack or Turbopack, but with a significant difference. Instead of creating a single bundled JavaScript file that is sent to the browser, Vite leverages the native browser’s ES modules support to directly ship modules to the browser....

In this article, we will explore how Vue.js simplifies the process of creating a single file responsible for all aspects of a component. By centralizing the responsibility for appearance and behavior, Vue.js offers a convenient approach known as Single File Components. Traditionally, a Vue component can be declared in a JavaScript file (.js) using the Vue.component method or within a new Vue instance. However, Vue.js introduces a new file format called ....

In this tutorial, we will explore the basics of Vuex, which is the official state management library for Vue.js. We will discuss the reasons why you should use Vuex and how to create a Vuex store. Additionally, we will go through a simple use case to understand how Vuex works. Introduction to Vuex Vuex is a state management library for Vue.js that allows you to share data across components in your application....

Introduction In JavaScript, loops are essential for executing a block of code repeatedly. However, sometimes we need to break out of a loop prematurely or skip an iteration. In this article, we will explore different ways to terminate loops in JavaScript. The break Keyword The break keyword allows us to exit a loop instantly, irrespective of the loop condition. This works for for, for..of, and while loops. Let’s consider an example:...