ES2019 or ES10 is the 2019 version of JavaScript. After the major 2015 update, JavaScript has been evolving every year. Developers get a small set of useful features, that helps us balance between innovation and stability. You can also follow […]
Functional Programming
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
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
Exercise: Suppose the following tables are given in the form of arrays of objects: [crayon-5f3656e64c04e497049476/] Translate the following SQL query using map, reduce, and filter: [crayon-5f3656e64c054517368910/] You are not allowed to use loops, if statements, logical operators, or the ternary […]
Translating SQL Queries using Map-Reduce-Filter in JavaScript
The article ES6 Strings and Template Literals introduced you to the syntax of ES6 strings and template literals. However, if you wanted to use ES6 template literals for microtemplating, the article itself does not help you. In this article, you […]
How Replacing JavaScript Templating Engines with ES6 Template Literals May Cost You ...
You might not know about me that I have conducted tech interviews with over 500 software developers from more than twenty countries with the objective of identifying and hiring the best talent. I have also been in the candidate position, […]
JavaScript Tech Interview Exercise 9: Event Delegation in a Pomodoro App
You might not know about me that I have conducted tech interviews with over 500 software developers from more than twenty countries with the objective of identifying and hiring the best talent. I have also been in the candidate position, […]
Binary Trees, Recursion, Tail Call Optimization in JavaScript
This interview question is also available as a video on my Youtube channel. You might not know about me that I have conducted tech interviews with over 500 software developers from more than twenty countries with the objective of identifying […]
JavaScript Tech Interview Exercise 5: Connect-4 Solver in ES6
There are countless questions your interviewers may ask when it comes to how JavaScript works. The idea behind asking these questions is to assess whether you have recent experience in writing JavaScript code. Some more clueless interviewers tend to ask […]
Ten JavaScript Theory Questions – The ES6 Quiz
In the article Building a Chat Component in React and ES6, we learned a way to create React components: [crayon-5f3656e64f907919549285/] This simple component is written by extending React.Component. We will now introduce another way to define simple components. You will […]
Container Components and Stateless Functional Components in React
In this short article, you will get a chance to learn what controlled components are and why they are beneficial. Suppose a component has an input field with a value depending on the state of the component. The default value […]
Creating Controlled Components in React
In this article, I will introduce my new Youtube channel with two videos. Both videos are from ES6 in Practice. By watching these short videos, you can learn about Arrow Functions, and you can also put theory into practice by […]
Video Tutorial – ES6 Arrow Functions with 3 Exercises
This is the third part of the React-Redux series. In the first part, we introduced React and Redux. Although there was no code in the article, clarifying the concepts is still important. In the second part, we set up the […]
Building a chat component in React and ES6
This article is a section from the workbook of ES6 in Practice. I created this course during the last couple of months, because there is an evident need for a resource that helps JavaScript developers put theory into practice. This […]
ES6 Iterators and Generators – 6 exercises and solutions
Most developers emphasize immutability when dealing with functional programming. Code written in functional style is testable, because the functions operate on data treated as immutable. In practice though, I see this principle violated from time to time. I will present […]