You write a function to find max number from array using es6? 2 / 2ChatGPT ChatGPT Sure, you can use the spread operator (…) along with the Math.max() function to find the maximum number in an array in ES6. Here’s a function that does that: javascriptCopy code const findMaxNumber = …
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What is the difference between useMemo and useCallback?
useMemo and useCallback are both hooks provided by React that aim to optimize performance by memoizing values or functions, respectively. However, they serve different purposes: useMemo: useMemo is used to memoize the result of a computation. It’s particularly useful when you have a computation that is expensive and you want …
Read More »What is Node.js, and what are its main features?
Sample Answer: Node.js is an open-source, server-side JavaScript runtime built on Chrome’s V8 JavaScript engine. It allows developers to build scalable, high-performance network applications using JavaScript, a language traditionally associated with client-side scripting in web browsers. Main Features of Node.js: Non-blocking I/O Model: Node.js is built on an event-driven, non-blocking …
Read More »Next.js is a framework built on top of React and Node.js, offering several advantages over using React and Node.js separately
Simplified Setup: React.js requires manual configuration for features like server-side rendering (SSR), routing, and code splitting. Setting up a React project typically involves configuring tools like webpack and babel, which can be complex and time-consuming. Next.js abstracts away much of this configuration, providing a pre-configured setup out of the box. …
Read More »What is javascript service workers?
Service workers are a crucial component of modern web development, particularly in the realm of Progressive Web Apps (PWAs). Essentially, service workers are scripts that run in the background of a web application, separate from the web page, intercepting and handling network requests and enabling features like offline support, push …
Read More »What is IIFE in Javascript?
IIFE stands for Immediately Invoked Function Expression. It’s a common pattern in JavaScript where you define and execute a function all in one go. Here’s a basic example: (function() { // Your code here })(); This construct creates a function expression enclosed within parentheses (function(){}), and then immediately invokes it …
Read More »What is hoisting in javascript with example?
Hoisting in JavaScript is a behavior where variable and function declarations are moved to the top of their containing scope during the compilation phase, regardless of where they are declared in the code. This means that you can access variables and functions before they are declared in your code. However, …
Read More »What are the differences between var, let and const in JavaScript?
var, let, and const are all used for variable declaration in JavaScript, but they have some differences in terms of scope, hoisting, and mutability: var: Variables declared with var are function-scoped or globally scoped, but not block-scoped. They are hoisted to the top of their function or global scope, which …
Read More »What are truthy and falsy values in JavaScript?
In JavaScript, a value is considered “truthy” if it evaluates to true when evaluated in a boolean context. Conversely, a value is considered “falsy” if it evaluates to false when evaluated in a boolean context. Here’s a breakdown of truthy and falsy values in JavaScript: Truthy values: Non-empty strings: Any …
Read More »How many ways have to initialise a JavaScript Array?
Sure, there are several ways to initialize a JavaScript array. Here are some common methods: 1. **Using an array literal**: The simplest way to create an array is by using square brackets `[]`: const arr1 = []; // Empty array const arr2 = [1, 2, 3]; // Array with elements …
Read More »How can I truncate a string to a specified length using JavaScript?
You can truncate a string to a specified length in JavaScript using various methods. One common approach is to use the `slice()` method to extract a portion of the string up to the desired length. Here’s an example function that truncates a string to a specified length: function truncateString(str, maxLength) …
Read More »Split a JavaScript string into words.
To split a JavaScript string into words, you can use the split() method, which divides a string into an array of substrings based on a specified separator. If you want to split the string into words, you can use a regular expression as the separator to split the string wherever …
Read More »What is callback Function?
A callback function, in programming, is a function that is passed as an argument to another function and is executed after some operation or event has occurred. Callback functions are commonly used in asynchronous programming, where tasks are performed concurrently and the program doesn’t wait for one task to finish …
Read More »Javascript code snippets for interview with Answer
Certainly! Here are a few JavaScript code snippets that are commonly used in interviews, along with their explanations: Reverse a String: Question:Write a function to reverse a string. Answer:javascript function reverseString(str) { return str.split('').reverse().join(''); } Check for Palindrome: Question:Write a function to check if a given string is a palindrome. …
Read More »Top HTML5 Interview question answer
1. What is HTML? HTML stands for HyperText Markup Language. It is the standard markup language used to create and structure content on the web. HTML is used to define the structure and presentation of web documents, including text, images, links, forms, and other elements. 2. What are the basic …
Read More »React top 100 interview questions and answer
1.) What is React and how does it work? React is a JavaScript library for building user interfaces. It allows developers to create reusable UI components and efficiently update them when the underlying data changes. React uses a virtual DOM (Document Object Model) to optimize rendering performance by minimizing direct …
Read More »how many types of functions in javascript?
JavaScript supports several types of functions. Here are some commonly used function types in JavaScript: Named Function: A function with a specified name that can be called using its name. For example: function add(a, b) { return a + b; } Anonymous Function: A function without a name, often assigned …
Read More »Here are some common interview questions and answers related to microservices:
Q1: What are microservices? A1: Microservices are a software architecture pattern where an application is built as a collection of small, loosely coupled, and independently deployable services. Each service is responsible for a specific business capability and can be developed, deployed, and scaled independently. Q2: What are the benefits of …
Read More »Top Javascript Interview Questions and answer
1.) What is JavaScript? JavaScript is a high-level, interpreted programming language primarily used for building interactive web pages and web applications. It provides dynamic functionality, enables client-side and server-side scripting, and can be used alongside HTML and CSS to create dynamic web content. 2.) What are the different data types …
Read More »Import is not working in React. Showing SyntaxError unexpected token ‘<'
Solution:- Go to Jest-config.js and put this command that is transformIgnorePatterns: ["<rootDir>/node_modules/(?![a-z])"], Save and Run it you program/application will work. Thank you.
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