What is Arrow Function? Arrow function {( ) =>} is concise way of writing JavaScript functions. The arrow functions in JavaScript allow us to create a shorter and anonymous function. Arrow functions were introduced in the ES6 version. They make our code more structured and readable. Why should you use arrow functions?
JavaScript is a language that handles multiple tasks simultaneously. This implies that JavaScript is an asynchronous programming language. Callbacks are a type of function that are a fundamental aspect of JavaScript. In this blog, we’ll look at what callbacks are, why they’re used, and how to use them
The useEffect Hook allows you to perform side effects in your components. It takes two arguments, first is setup function, a function with your effect's logic. and second is dependencies, which is an optional argument useEffect(<setup>, <dependencies>) Example: Dependencies is an optional argument,
Hooks allow function components to have access to state and other React features. Hooks allow us to "hook" into React features such as state and lifecycle methods. Types of Hooks: 1) useState() :This hook helps to manage state. You provide an initial value, and it returns two things:
o Higher Order Functions are functions that perform operations on other functions. o Higher-order functions are functions that make use of functions as either their argument or their return value. o Functions that get passed in as parameters are callback functions. o Functions can be passed into other functions as
-A function is a reusable block of code that groups together a sequence of statements to perform a specific task. -Function names can contain letters, digits, underscores, and dollar signs. -JavaScript doesn't have a function data type but when we find the data type of a function using
1.Safe Calls (?.) - If the object is null, the expression which is using the safe call operator will return null instead of throwing a - Null Pointer Exception. - It allows you to safely access properties or methods of an object that may be null. EXAMPLE OUTPUT EXAMPLE OUTPUT
Introduction: - In the dynamic landscape of software development, managing database schema changes efficiently is crucial for ensuring the stability and scalability of applications. Liquibase, an open source database. It's a free tool that helps you control and organize changes to your database . Chapter 1: What is LiquiBase?
Learn to parse date and time strings into instances of LocalDate and LocalDateTime using strict style using ResolverStyle.STRICT parameter with DateTimeFormatter instance. ResolverStyle – Parsing styles Parsing a string to date in Java happens in two phases: * ResolverStyle is an enum and used to control how phase 2, resolving, happens.
What is Playwright :- Playwright is Free & open source Framework for web automation testing. Created by Microsoft. Introduction:- Playwright Test was created specifically to accommodate the needs of end-to-end testing. Playwright supports all modern rendering engines including Chromium, WebKit, and Firefox. Test on Windows, Linux, and macOS, locally
Chapter 1: PostgreSQL 101 PostgreSQL is an open-source relational database management system (RDBMS) that's freely available for all. Think of it as a powerful tool that lets you organize and manage data effectively. Step 1: Install PostgreSQL : If you haven't installed PostgreSQL yet, you can do
In React Native, we typically use styles or create selectors for styling. However, an alternative approach is to use NativeWind it adds some plugins to Tailwind CSS with the className props, it allow us to use CSS StyleSheets Example 1: Text element with the className prop set to apply for
An AI Powered Image Processor is used in a software using artificial intelligence to analyze images and extract the text (Optical Character Recognition). In any application, you can scan documents like medical prescriptions, business cards, passport, etc and get the text from the document. In the app, you click on
This is the homepage of WORDSMART user can start the use by entering name. Words: A list of words opens in the Words page. When you click on that word, the below screen opens. GRE Wordlists: In GRE Word List, Words are sorted alphabetically. When you click on a specific
The JavaScript reduce method takes each value of an array, and applies reducer function such that it changes the array into a single value. Syntax of .reduce() method: array.reduce((accumulator, currentValue, index, array) =>{....}, initialValue} The .reduce() method takes two arguments : 1. The first is reducer function, which is
This is an AI-based educational app. This app is built for school students to study virtually. It is available for all classes from 1st grade to 12th grade. Sign up/ Log in If you are a new user, you need to register it first. To register with the Shiksha App