TypeOfNaN

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How to condition a function's output type based on its input type in Typescript9/10/2022

10x engineering for the rest of us9/2/2022

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What does it mean that Solid.js is truly reactive?5/18/2022

What the useEvent React hook is (and isn't)5/6/2022

Solid.js feels like what I always wanted React to be2/27/2022

How to use onChange in Solid.js2/22/2022

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Creating the Hatchling.app MVP rapidly with React2/6/2022

How to write a binary search algorithm in JavaScript12/12/2021

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Fix the "Function makes the dependencies of useEffect Hook change on every render" warning in React11/26/2021

How to toggle and array of items separately in React11/26/2021

Modern front-end development and the neglect of application display state11/25/2021

Mutation isn't always bad in JavaScript11/24/2021

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You probably shouldn't ignore react-hooks/exhaustive-deps linting warnings8/3/2021

A notional modern SaaS app architecture7/5/2021

How to preserve query parameters in React Router links7/2/2021

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How to conditionally wrap JSX with a component in React6/14/2021

How to update nested state in React6/10/2021

How does the useMemo hook work in React?6/8/2021

How to serve a Gatsby app with Nginx in Docker5/26/2021

How to get a list of files in a directory using node.js5/24/2021

Redefining—and making a case for—resumé-driven development5/22/2021

How I use Github Actions to schedule Gatsby blog posts5/19/2021

How to use the useSelector Redux hook with Typescript5/17/2021

How To Fix Undefined 'this.state' in React Class Components5/14/2021

What is the Difference Between Promise.all and Promise.allSettled?5/13/2021

Scheduling Recurring Netlify Builds Using Github Actions5/11/2021

How to Bind Event Listeners to Dynamically-Created Elements in JavaScript5/8/2021

Why is the React useState Set Function Not Reflecting Changes Immediately?5/2/2021

What Questions Should You Ask in a Software Engineer Interview?4/30/2021

A Quick Primer on Signed vs. Unsigned Integers4/19/2021

Mutability and Shadowing in Rust4/19/2021

How to Use Pipe (the Pipeline Operator) in JavaScript4/19/2021

Fix the "Maximum Update Depth Exceeded" Error in React4/13/2021

Creating a React Infinite Scroll Component4/10/2021

How to Animate Items Out of an Array in React3/28/2021

Using Session Storage in React with Hooks3/28/2021

Making Every Object Property Nullable in Typescript3/18/2021

Fix the "React Hook is Called Conditionally" Error in React3/16/2021

How to Find an Object Deeply and Do Something with the Result in JavaScript3/13/2021

How to Not Lose Typescript Types When Using Custom React Components3/12/2021

How to Serve a Static App with nginx in Docker3/7/2021

How to Execute a Function After the User Stops Typing in JavaScript3/4/2021

Your First Svelte Project: A Todo List App3/2/2021

How to Test Your React App Effectively with React Testing Library3/1/2021

Some Good Interview Questions for Experienced Frontend Developers2/24/2021

Fix the "Uncaught TypeError: destroy is not a function" Error in React2/21/2021

Fix the "Cannot read property 'map' of undefined" Error in React2/21/2021

Adding Apollo GraphQL to Your React Project2/18/2021

Mocking Apollo GraphQL Queries in React Testing2/17/2021

Setting Up a Svelte Project with Typescript2/14/2021

How to Set Up a Svelte App with Rollup2/10/2021

How to Serve an Angular App with nginx in Docker2/9/2021

How to Split an Array Into a Group of Arrays in JavaScript1/24/2021

Your First Node Express App with Typescript1/18/2021

Is It Too Late To Be a Software Engineer?1/16/2021

How to Perfectly Fit an SVG to its Contents Using JavaScript1/15/2021

Generating Random Human-Readable Slugs in JavaScript1/13/2021

A useLocalStorage React Hook for JavaScript and Typescript1/10/2021

Writing Your Own useFetch Hook in React1/4/2021

How to Capture Between Two Characters in JavaScript using Regular Expressions1/1/2021

How to Add a Thousandths Place Comma (Every Three Digits) in JavaScript12/29/2020

Turning a Callback Function Into a Promise12/29/2020

Programming Languages and Frameworks to Learn in 202112/26/2020

How to Serve a Vue App with nginx in Docker12/25/2020

How to Stop All Docker Containers12/24/2020

What is The Difference Between Server Side Rendering (SSR) and React Server Components?12/22/2020

Creating a Recursive List Menu Any Number of Levels Deep in React12/17/2020

How to Abort Multiple Fetch Requests in JavaScript using AbortController12/8/2020

Using Cookie-Based CSRF Tokens for Your Single Page Application12/5/2020

Modernizing Your Application and Processes with Modernizing.dev12/1/2020

How Does Async-Await Work in JavaScript11/30/2020

Why is My Recursive Function Returning Undefined in JavaScript?11/13/2020

How to Wait for Multiple Promises to Resolve in JavaScript Using Promise.all11/11/2020

How to Abort a Fetch Request in JavaScript using AbortController11/10/2020

How to Select or Omit Properties From an Object in JavaScript10/18/2020

How to Serve a Node App in Docker10/17/2020

Creating Your Own DeepPartial Type in Typescript to Allow Any Subset of Object Properties Deeply9/26/2020

How to Traverse an Object of Arbitrary Depth in JavaScript9/21/2020

Writing Custom React Hooks with Typescript9/19/2020

Learn the Basics of Redux by Writing Your Own Version in 30 Lines9/12/2020

What is Debouncing?9/7/2020

How to Serve a React App with nginx in Docker9/6/2020

How to Remove a Specific Item From an Array in JavaScript9/5/2020

How to Make One Function Argument Dependent on Another in Typescript9/5/2020

Using Local Storage in React with Your Own Custom useLocalStorage Hook9/1/2020

Using Jest Mocks to Prevent Non-Deterministic or Otherwise Changing Components from Continously Resulting in Snapshot Diffs8/30/2020

Schema-Driven React for More Efficient Development8/30/2020

Generate All Possible Combinations in JavaScript Using Combinate6/13/2020

How I went from 0 to 1,050 Developer Blog Email Signups in 6 Months6/11/2020

There May Not Be a Better Way to Effortlessly Improve Code Quality than Using Prettier Code Formatting6/6/2020

10 More JavaScript Quiz Questions and Answers to Sharpen Your Skills6/3/2020

10 JavaScript Quiz Questions and Answers to Sharpen Your Skills5/27/2020

Failing Faster and Iterating with Modern Software Development Practices5/26/2020

Where Can I find Deno Third Party Modules?5/24/2020

Programmatically Navigate Using React Router and Hooks5/23/2020

What is the Express.js of Deno?5/23/2020

Deep Object Change Handlers in Typescript5/22/2020

Pinning Dependency Versions in Deno5/19/2020

Writing Your First Deno Server in 60 Lines5/18/2020

If Your Refactors Break A Lot of Tests, You May Not Be Testing the Right Thing5/14/2020

Understanding Express.js: Creating Your Own Node HTTP Request Router5/4/2020

Interview Practice: Traversing a Linked List in JavaScript4/28/2020

The Revealing Module Pattern in JavaScript4/27/2020

Using the Fluent Interface Pattern to Build Objects in JavaScript4/26/2020

Your First React Typescript Project: a Todo List App4/24/2020

A React Typescript Change Handler to Rule Them All4/20/2020

Writing a Custom useWindowSize React Hook4/18/2020

Taking Pixel-Perfect Screenshots Every Time Using Chrome Devtools4/18/2020

Roll Your Own JavaScript Immutability Function Using the Proxy Object4/16/2020

Learn the JavaScript Array.every() and Array.some() methods3/28/2020

What is a Higher-Order Function?3/7/2020

The JavaScript Set Object2/19/2020

What is Memoization?2/13/2020

What is a Thunk?1/31/2020

Set Up a Typescript React Redux Project1/23/2020

Variable Assignment and Primitive/Object Mutability1/21/2020

What is a Pure Function?1/19/2020

Exploring the Symmetric Difference Interview Question in JavaScript1/12/2020

An Easy Way to Build a Tree in JavaScript Using Object References11/30/2019

An Approach to JavaScript Object Schema Migration11/27/2019

Random JavaScript Tips11/16/2019

Debouncing with Redux Middleware10/20/2019

Toggling Light/Dark Theme in React with useContext9/14/2019

Callbacks, Promises, and Async-Await9/7/2019

Short-Circuit Evaluation in JavaScript9/7/2019

Writing a Custom React useDebounce Hook with Typescript8/30/2019

A More Idiomatic Two-Sum Solution in JavaScript8/26/2019

Beware the Reduce / Spread Operator Combination!8/24/2019

Creating an Object Validator in JavaScript the Test-Driven Development Way8/24/2019

An Introduction to Memoization in JavaScript8/19/2019

Calculating Derived State in JavaScript Using Selectors8/17/2019

Exploring the Two-Sum Interview Question in JavaScript8/11/2019

First-Class Functions in JavaScript8/1/2019

Why We're Looking Forward to Optional Chaining7/28/2019

Object Assignment vs. Primitive Assignment in JavaScript for Beginners7/27/2019

Avoiding Race Conditions when Fetching Data with React Hooks4/10/2019

Debouncing with React Hooks4/9/2019

The Best Whiteboard Interview Advice I Ever Received3/24/2019

A 100DaysOfCode Front-End Curriculum3/1/2019

Fun with React and Git Hooks11/28/2018

Nick Scialli

Nick Scialli

Nick Scialli is a senior UI engineer at Microsoft.