Parsa Jiravand

6 min read

Parsa Jiravand

Oct 15

Stop Electing a Leader Tab. SharedWorker Just Holds the Connection.

#javascript #webdev #frontend #performance

5 min read

Parsa Jiravand

Oct 14

I Turned 44 Blog Posts Into a Frontend Roadmap You Have to Pass

#showdev #webdev #frontend #career

15 min read

Parsa Jiravand

Oct 14

Remote work means someone else is telling your story for you

#discuss #career #watercooler #productivity

7 min read

Parsa Jiravand

Oct 14

You Installed a Library for Numbers PerformanceObserver Already Has.

#javascript #performance #webdev #programming

7 min read

Parsa Jiravand

Oct 13

Your Tabs Each Open Their Own WebSocket. navigator.locks Elects One.

#javascript #webdev #frontend #performance

6 min read

Parsa Jiravand

Oct 13

Next.js 16 Image: priority Deprecated, quality Now Allowlisted

#nextjs #react #webdev #tutorial

13 min read

Parsa Jiravand

Oct 12

Vue watch vs watchEffect: The Complete Guide

#vue #javascript #tutorial #webdev

12 min read

Parsa Jiravand

Oct 12

I Shipped a Fix. My Service Worker Kept Serving the Bug.

#javascript #webdev #browser #performance

6 min read

Parsa Jiravand

Oct 11

Nuxt 4 Migration: The Breaking Changes That Actually Bite

#nuxt #javascript #tutorial #webdev

12 min read

Parsa Jiravand

Oct 11

Your Lighthouse Score Is 100. Long Animation Frames Explain the Jank.

#javascript #performance #webdev #programming

6 min read

Parsa Jiravand

Oct 10

React 19.3 Fragment Refs: Skip the Wrapper Div for a Ref

#react #javascript #tutorial #webdev

11 min read

Parsa Jiravand

Oct 10

You Added `will-change` to Fix the Jank. You Made It Worse.

#css #performance #webdev #frontend

5 min read

Parsa Jiravand

Oct 9

You're Animating for Everyone. `prefers-reduced-motion` Fixes That.

#css #a11y #webdev #frontend

13

6 min read

Parsa Jiravand

Oct 8

Stop Losing Promise Errors. `unhandledrejection` Catches Them.

#javascript #webdev #programming #debugging

5 min read

Parsa Jiravand

Oct 7

Junior interviews don't test what they used to, and nobody updated you

#discuss #career #beginners #productivity

6 min read

Parsa Jiravand

Oct 7

Stop Retrying Immediately. Exponential Backoff Fixes It.

#javascript #webdev #programming #node

6 min read

Parsa Jiravand

Oct 6

I Built Cross-Tab Logout. The storage Event Skipped One Tab.

#javascript #webdev #frontend #browser

6 min read

Parsa Jiravand

Oct 6

Next.js Streaming Metadata: Why Your `<head>` Looks Incomplete

#nextjs #seo #webdev #tutorial

12 min read

Parsa Jiravand

Oct 5

Vue defineModel: The v-model Contract, Explained

#vue #javascript #tutorial #webdev

13

11 min read

Parsa Jiravand

Oct 5

`beforeunload` Can Still Kill Your bfcache. Mount It Only When Dirty.

#webdev #javascript #performance #frontend

6 min read

Parsa Jiravand

Oct 4

Nuxt 4.5 SSR Streaming: The Route Rules That Disable It

#nuxt #ssr #javascript #tutorial

12 min read

Parsa Jiravand

Oct 4

Stop Hand-Rolling an Exclusive Accordion. `<details name>` Does It

#html #css #webdev #a11y

6 min read

Parsa Jiravand

Oct 3

React 19.3 ViewTransition: Animate State Without Losing It

#react #javascript #tutorial #webdev

13 min read

Parsa Jiravand

Oct 3

Your Search Box Lags. Debounce Hides It; `useTransition` Fixes It

#react #javascript #webdev #performance

5 min read

Parsa Jiravand

Oct 2

NestJS 12: Standard Schema Validation Without class-validator

#nestjs #node #typescript #tutorial

12 min read

Parsa Jiravand

Oct 2

Stop Fixing Headline Gaps With Negative Margins. Use `text-box-trim`

#css #webdev #frontend #typography

14

5 min read

Parsa Jiravand

Oct 1

`:nth-child(even)` Counts Hidden Rows. `of S` Fixes Your Stripes

#css #webdev #frontend #tutorial

5 min read

Parsa Jiravand

Sep 30

Vue computed(): What It Caches and When It Reruns

#vue #javascript #tutorial #webdev

10 min read

Parsa Jiravand

Sep 30

Your `backdrop-filter` Is Working. Your Background Is Hiding It.

#css #webdev #frontend #tutorial

6 min read

Parsa Jiravand

Sep 30

Why your code review comments sound harsher than you meant

#discuss #career #codereview #beginners

7 min read

Parsa Jiravand

Sep 30

Blocking `<script>` Won't Stop innerHTML XSS. `setHTML()` Will.

#javascript #security #webdev #api

7 min read

Parsa Jiravand

Sep 29

Nuxt Server Routes Explained: How Nitro Builds Your API

#nuxt #backend #javascript #tutorial

11 min read

Parsa Jiravand

Sep 29

Your 'Save' Button Makes Copies. The File System Access API Doesn't.

#javascript #webdev #browser #frontend

6 min read

Parsa Jiravand

Sep 29

Stop Guessing When Scrolling Stops — Use scrollend

#javascript #webdev #dom #frontend

5 min read

Parsa Jiravand

Sep 29

Next.js Route Handlers: GET Stopped Caching in 15 — How to Cache in 16

#nextjs #typescript #webdev #tutorial

13 min read

Parsa Jiravand

Sep 26

getCurrentPosition() Doesn't Just Check — It Prompts

#javascript #webdev #browser #tutorial

5 min read

Parsa Jiravand

Sep 26

NestJS Guards: CanActivate, ExecutionContext & Reflector

#nestjs #node #typescript #tutorial

12 min read

Parsa Jiravand

Sep 26

localStorage Isn't Free — It's Blocking Your Main Thread

#javascript #webdev #performance #tutorial

5 min read

Parsa Jiravand

Sep 26

JSON.stringify Is Quietly Deleting Your File Uploads

#javascript #webdev #tutorial #html

5 min read

Parsa Jiravand

Sep 26

The Background Task That Waited 40 Seconds for 'Idle'

#javascript #webdev #performance #frontend

5 min read

Parsa Jiravand

Sep 22

Vue Composables: The Shared State Trap (+ Cheat Sheet)

#vue #javascript #tutorial #webdev

11 min read

Parsa Jiravand

Sep 22

The Dropdown You've Been Faking for a Decade

#css #html #webdev #a11y

4 min read

Parsa Jiravand

Sep 22

Next.js proxy.ts Explained (with Cheat Sheet)

#nextjs #javascript #tutorial #webdev

10 min read

Parsa Jiravand

Sep 22

Stop Writing JavaScript To Fix `100vh` On Mobile

#css #webdev #frontend #tutorial

5 min read

Parsa Jiravand

Sep 20

React Derived State: Why That useState Is Probably a Bug

#react #javascript #tutorial #webdev

12 min read

Parsa Jiravand

Sep 20

Your Browser Is Rejecting Every Drop On Purpose

#javascript #webdev #html #tutorial

5 min read

Parsa Jiravand

Sep 20

Nuxt Hydration Mismatch: Why It Happens and How to Fix It

#nuxt #ssr #javascript #tutorial

12 min read

Parsa Jiravand

Sep 20

Chrome Already Has The Eyedropper You're Building

#javascript #webdev #api #tutorial

5 min read

Parsa Jiravand

Sep 18

NestJS Testing Module: Provider Overrides (with Cheat Sheet)

#nestjs #node #typescript #tutorial

17

11 min read

Parsa Jiravand

Sep 18

The CSS Property That Fixes Dark Mode's Ugly White Boxes

#css #webdev #frontend #a11y

12

4 min read

Parsa Jiravand

Sep 17

Stop Debouncing Resize. The Browser Already Watches It.

#javascript #webdev #css #browser

15

5 min read

Parsa Jiravand

Sep 16

Your Fetch Already Streams. You're Buffering It Anyway.

#javascript #webdev #api #streams

4 min read

Parsa Jiravand

Sep 15

Next.js Parallel & Intercepting Routes: Modals Done Right

#nextjs #react #webdev #tutorial

13

12 min read

Parsa Jiravand

Sep 15

Your Custom Element Is Missing From FormData — ElementInternals Fixes It

#javascript #webcomponents #forms #webdev

4 min read

Parsa Jiravand

Sep 14

Vue nextTick Explained: How DOM Updates Are Batched

#vue #javascript #tutorial #webdev

14

11 min read

Parsa Jiravand

Sep 14

The 'Read Aloud' Button That Only Works on the Second Click

#javascript #webdev #a11y #tutorial

14

5 min read

Parsa Jiravand

Sep 13

useAsyncData Keys in Nuxt: Caching, Dedupe & the Sharing Bug

#nuxt #ssr #javascript #tutorial

16

12 min read

Parsa Jiravand

Sep 13

The Search Highlight That Deletes Your Selection

#css #javascript #webdev #tutorial

17