Javascript

Everything related to Javascript.

Back in 2015, I was developing applications using Backbone and Marionette, when a young developer approached me to tell me something exciting. “Check out React”, he said. I have heard this before with AngularJs, with KnockoutJs, and during that time, […]

React Context API

This entry was posted in React + Redux and tagged Javascript React on 19th November 2018 by zsolt-nagy

In software development, working with strings is a common problem. We often read, process, and write text files, perform logging on the activities of a system, or analyze user input. Learning how to perform string operations is essential in any […]

Using Strings in JavaScript

This entry was posted in JavaScript Basics and tagged ES6 Javascript Tutorial on 30th September 2018 by zsolt-nagy

This is another episode of the JavaScript for Beginners series. In the first post, you have learned how to write basic JavaScript code. In this article, you will find out how to use JavaScript with HTML and CSS. The goal […]

Using JavaScript with HTML and CSS

This entry was posted in JavaScript Basics and tagged css events html5 Javascript Tutorial on 23rd September 2018 by zsolt-nagy

In this article, you will learn about higher order functions. An important cornerstone of functional programming is higher order functions. If you want to write programs in mostly functional style, it is inevitable that you master the basics of higher […]

Higher Order Functions in JavaScript

This entry was posted in JavaScript Basics and tagged ES6 Functional Programming Javascript on 6th August 2018 by zsolt-nagy

This article will give you an overview on the new features of ES2018. First, we will discuss the new features of ES2018. Then you will learn what you need to do to start using them today. You may want to […]

What’s New in ES2018?

This entry was posted in ES6 and tagged computer science ES6 Javascript regex on 30th July 2018 by zsolt-nagy

As I promised in my last article on JavaScript fundamentals, you can expect some beginner-friendly content on this blog along with some learning paths. I strongly believe in practical application. Therefore, I will not bore you with facts, long theory, […]

JavaScript Tutorial for Beginners

This entry was posted in JavaScript Basics and tagged ES6 Javascript Learning Tutorial on 26th July 2018 by zsolt-nagy

This article is a continuation of last week’s post on ES2017 Async-Await, detailing the updates of ES2017. Check out the ES2016 plus compatibility table for more information on the current browser support. Most likely, you will need a transpiler. Use […]

ES2017 Object and String Extensions

This entry was posted in ES6 and tagged Javascript on 2nd July 2018 by zsolt-nagy

The ability to write asynchronous functions is a major update in ES2017. In order to understand this chapter, I suggest that you review the chapter on promises. What are asynchronous functions? Asynchronous functions are functions that return a promise. We […]

A Practical Introduction to ES2017 Async-Await

This entry was posted in ES6 and tagged ES6 Functional Programming Javascript on 25th June 2018 by zsolt-nagy

If you have read most of the blog posts of zsoltnagy.eu, you can conclude that most of the articles require at least some basic knowledge about JavaScript. The main exception is the JavaScript Basics category. This article is in the […]

Using JavaScript in 2018 – Experience and Opportunities

This entry was posted in JavaScript Basics and tagged computer science ES6 Javascript Learning Software Engineering on 18th June 2018 by zsolt-nagy

Exercise: Suppose the following tables are given in the form of arrays of objects: [crayon-5d829492dd8c7530339199/] Translate the following SQL query using map, reduce, and filter: [crayon-5d829492dd8d0727704123/] You are not allowed to use loops, if statements, logical operators, or the ternary […]

Translating SQL Queries using Map-Reduce-Filter in JavaScript

This entry was posted in ES6 JavaScript Interview Questions and tagged computer science ES6 Functional Programming Javascript Software Engineering on 11th June 2018 by zsolt-nagy

Exercise: What is memoization? What are its benefits? What is the necessary condition for using memoization? Illustrate the benefits of memoization using an example. Remark: Expect these types of questions when bridging theory with practice. You need to know what […]

Memoization in JavaScript

This entry was posted in ES6 JavaScript Interview Questions and tagged ES6 Javascript on 4th June 2018 by zsolt-nagy

Exercise: Create a stopwatch that counts down from a given number of seconds in the format mm:ss. Make it possible to start, pause, and reset the countdown. Make sure you can pass a callback function to the timer that is […]

JavaScript Tech Interview Exercise 16: Stopwatch

This entry was posted in JavaScript Interview Questions and tagged ES6 html5 Javascript on 28th May 2018 by zsolt-nagy