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Dmitri Pavlutin
I help developers understand Frontend technologies
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JavaScript
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Type Checking in JavaScript is Slightly Screwed

Posted December 3, 2019
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"typeof" and "instanceof" perform the type checking in JavaScript. While they are generally simple to use, make sure to known the edge cases.
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The Benefits of Orthogonal React Components

Posted November 27, 2019
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How to design React components that are easy to change, maintain, and test? Strive to orthogonal React components.
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15 Common Operations on Arrays in JavaScript (Cheatsheet)

Updated December 24, 2019
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15 operations on arrays in JavaScript: iterate, map, reduce, concat, slice, clone, search, query, filter, insert, remove, empty, fill, flatten and sort.
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The Wise Guide to React useState() Hook

Posted November 13, 2019
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React useState() hook manages the state of functional components.
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Lifecycle methods, hooks, suspense: which's best for fetching in React?

Posted November 6, 2019
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Lifecycle methods, hooks & suspense fetch data in React. The post describes them in examples and demos, distill the benefits and drawbacks of each one.
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JavaScript Closure: The Beginner's Friendly Guide

Updated March 27, 2023
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A closure is a function that captures variables from where it is defined (or its lexical scope).
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Be Aware of Stale Closures when Using React Hooks

Updated March 17, 2023
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The stale closures is a pitfall of React hooks when an outdated variable is captured by a closure.
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7 Simple but Tricky JavaScript Interview Questions

Updated November 21, 2019
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A compiled list of simple but tricky questions you might be asked during a JavaScript coding interview.
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When to Use Map instead of Plain JavaScript Object

Posted October 9, 2019
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Map complements plain objects. Map's main benefits over plain object is allowing keys of any type and any name.
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Don't Use JavaScript Variables Without Knowing Temporal Dead Zone

Posted October 1, 2019
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Temporal Dead Zone forbids the access of variables and classes before declaration in JavaScript.
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Dmitri Pavlutin

About Dmitri Pavlutin

Software developer and sometimes writer. My daily routine consists of (but not limited to) drinking coffee, coding, writing, overcoming boredom 😉. Living in the sunny Barcelona. 🇪🇸
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