In JavaScript, the ?. is called the “optional chaining” operator. It is a feature introduced in ECMAScript 2020 (ES11) . It is used to simplify accessing object properties and calling object methods , especially when dealing with nested or deeply nested objects. The optional chaining operator (?.) allows to safely access Objects properties or Object […]
pip is not recognized as a command in your Command Prompt or PowerShell environment. This issue might occur due to the pip executable not being in your system’s PATH, which is required to run pip from any directory. Make sure you have first installed python already then follow the article. How to fix the issue:
You know how to build basic react app and want to improve it further then read this article. You can use these suggestions to improve your react app’s code. There are many more general things like avoid code repeating, use git to manage version control of your code etc. For a start the improvement suggestions
In this blog you will learn to code timer app using javascript and react. Step 1: Setup React Project Install Node.js and npm (Node Package Manager) if you haven’t already. Open your command prompt or terminal and navigate to the desired directory for your project. Run the following command to create a new React project:
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React.js is a popular JavaScript library for building user interfaces. It was developed by Facebook and released in 2013. React.js allows developers to create reusable UI components and efficiently manage the application state, making it a powerful tool for building complex and interactive web applications. React.js is widely used in the development of single-page applications
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Destructuring in JavaScript helps you to extract individually selected values from arrays or individually selected properties from objects and assign them to variables. Following examples demonstrate different use cases of destructuring: In this example, we extract the name and age properties from the person object and assign them to variables of the same name. Here,
Here are the different types of loops in JavaScript: Example: This loop will print the numbers 1 to 5 in the console. Example: This loop will print the numbers 1 to 5 in the console. Example: This loop will also print the numbers 1 to 5 in the console. Example: This loop will print the
Lets first understand the lexical scope to understand the concept of function scope and closures in javascript In the context of programming and scope, the term “lexical” refers to the concept of how the scope of variables is determined based on the physical structure (the lexical structure) of the code. Lexical scope, also known as
Event binding on dynamically created elements in JavaScript refers to the process of attaching event listeners to elements that are added to a webpage dynamically, meaning they are created or modified after the initial page load. This is a common scenario when you want to respond to user interactions on elements that are generated or
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In this blog, we will be writing script for this app using async/await and promise .then syntax . We will also write scripts for other apps as well. Keep on reading as this article is written in depth. We will first understand what is asynchronous call and callback hell. Then we will discuss different approaches
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