2021-09-07
2520
#vanilla javascript
Prateek Surana
65366
Sep 7, 2021 ⋅ 9 min read

A JavaScript developer’s guide to browser cookies

Prateek Surana I'm a frontend engineer currently building Devfolio who likes to build awesome products and write about React, JavaScript, and TypeScript.

Recent posts:

Goodbye, messy data: An engineer’s guide to scalable data enrichment

Goodbye, messy data: An engineer’s guide to scalable data enrichment

Walk through building a data enrichment workflow that moves beyond simple lead gen to become a powerful internal tool for enterprises.

Alexandra Spalato
Oct 8, 2025 ⋅ 6 min read

DesignCoder and the future of AI-generated UI

From sketches to code in minutes, DesignCoder shows how AI-generated, hierarchy-aware UIs could change the way developers prototype and ship apps.

Rosario De Chiara
Oct 7, 2025 ⋅ 5 min read

Should you use if() functions in CSS?

It’s 2025, and CSS finally thinks logically. The if() function brings real conditional styling — no hacks, no JS workarounds. Here’s how to use it right.

Ikeh Akinyemi
Oct 7, 2025 ⋅ 16 min read
Typescript or Zod for Validation?

TypeScript vs Zod: Clearing up validation confusion

Learn when to use TypeScript, Zod, or both for data validation. Avoid redundant checks and build safer, type-sound applications.

Alexander Godwin
Oct 6, 2025 ⋅ 3 min read
View all posts

4 Replies to "A JavaScript developer’s guide to browser cookies"

  1. Probably one of the best articles I have read! (in a long while)

    Good job and great explanation of how cookies defer from Local- & session storage. Learned a lot of new concepts here including security vulnerabilities regarding cookies and how to properly use cookie attributes.

  2. Thank you for this comprehensive article. Would you know if browsers, iOS Safari in particular, would start treating a cookie set in js as an http cookie if the server updates that cookie in a future request? For instance by changing the expiry date.

Leave a Reply