The Push API is a powerful tool that allows web applications to receive messages pushed by a server, even when the app is not actively open in the browser or running on the device. This opens up possibilities for delivering notifications and content updates, leading to a more engaged audience. Is it well supported? The Push API is currently supported by Chrome (Desktop and Mobile), Firefox, Opera, and Edge (since version 17)....
In my recent project, I used Reach Router as it is the simplest way to implement routing in a React app. It provides an easier alternative to React Router, which I have used in the past. Here is a quick 5-minute tutorial to get started with Reach Router. Installation To get started, install Reach Router using the following command: npm install @reach/router In case you are unfamiliar with the @ syntax, it is an npm feature that allows the use of scoped packages....
The React Context API is a powerful tool for managing state in your React applications. It allows you to pass state across different components without the need for manual prop drilling. This API simplifies the process of state management and can be used as an alternative to libraries like Redux. To understand how the Context API works, you first need to create a context using the React.createContext() function: const { Provider, Consumer } = React....
In React, when you want to return more than one element from a component, you usually wrap them in a div to satisfy the requirement of returning a single element. However, this approach adds an unnecessary div to the output. To avoid this, you can use React.Fragment. Here’s an example of how to use React.Fragment: import React, { Component, Fragment } from 'react'; class BlogPostExcerpt extends Component { render() { return ( <React....
In this blog post, we will discuss how to interact with the state of your React components. The state is a crucial part of managing component data and handling user interactions. Setting the Default State To set the default state of a component, you need to initialize this.state in the constructor. For example, let’s consider a BlogPostExcerpt component with a clicked state: class BlogPostExcerpt extends Component { constructor(props) { super(props); this....
The Relational Model is the most popular logic data model used in SQL databases. It is based on tables and relations, providing a straightforward and intuitive way to organize and analyze data. Developed in 1969 by Edgar F. Codd, an English computer scientist, the Relational Model has remained a fundamental concept in computer programming for over 50 years. Tables are the building blocks of the Relational Model. They consist of rows and columns, similar to an Excel spreadsheet....
The repeat() method in JavaScript, introduced in ES2015, allows you to repeat a specified string a certain number of times. It can be useful in situations where you need to generate repetitive patterns or output repeated text. Here’s an example of how to use the repeat() method: 'Ho'.repeat(3); // 'HoHoHo' In this example, the string “Ho” is repeated three times, resulting in the output “HoHoHo”. If you call the repeat() method without any parameters or with a parameter of 0, it will return an empty string:...
Accessing DOM elements using querySelector and querySelectorAll The Selectors API is a useful feature provided by the DOM that allows you to easily select elements on a page. It offers two methods: document.querySelector() and document.querySelectorAll(). Introducing the Selectors API Traditionally, browsers only provided a single way to select a DOM element - by its id attribute using the getElementById() method offered by the document object. However, with the introduction of the Selectors API in 2013, you now have more options....
The Set data structure in JavaScript allows you to store and manage a collection of objects or primitive types. It is similar to a Map, where the values are used as keys and the map value is always a boolean true. Table of Contents What is a Set? Initialize a Set Add items to a Set Check if an item is in the set Delete an item from a Set by key Determine the number of items in a Set Delete all items from a Set Iterate the items in a Set Initialize a Set with values Convert to array Convert the Set keys into an array A WeakSet What is a Set?...
Learn all about the setPrototypeOf() method in the JavaScript Object object. Setting the prototype of an object is made possible with the setPrototypeOf() method. To dive deeper into JavaScript Prototypal Inheritance, check out my comprehensive guide here. Syntax: Object.setPrototypeOf(object, prototype) Example: const Animal = {} Animal.isAnimal = true const Mammal = Object.create(Animal) Mammal.isMammal = true console.log('-------') Mammal.isAnimal // true const dog = Object.create(Animal) dog.isAnimal // true console.log(dog.isMammal) // undefined Object.setPrototypeOf(dog, Mammal) console....