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JavaScript

Once relegated to the browser as one of the 3 core technologies of the web, JavaScript can now be found almost anywhere you find code. JavaScript developers move fast and push software development forward; they can be as opinionated as the frameworks they use, so let's keep it clean here and make it a place to learn from each other!

Client-side, server-side, it doesn't matter. This tag should be used for anything JavaScript focused. If the topic is about a JavaScript framework or library, just remember to include the framework's tag as well.

How should the tag be written? All lower-case letters for the tag: javascript.

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Born from airport boredom and spec quirks

Sylwia Laskowska

Oct 29

Yes, {} + [] = 0. No, JavaScript Isn’t Broken

#javascript #webdev #node #programming

79

5 min read

Nov 1

strlen Says 4, .length Says 2: PHP Byte Strings vs TypeScript UTF-16 for One Emoji

#typescript #php #javascript #webdev

8 min read

Maha Mohammed Alawi Alsaqaf

Nov 1

Your test data is lying to you: realistic addresses, phones and check digits for 40 countries

#webdev #javascript #testing #i18n

5 min read

Thới Hải Đức

Nov 1

Why does setTimeout(0) run after your Promise? The event loop, step by step

#javascript #tutorial #webdev #beginners

3 min read

Tim Keen

Oct 31

Character limits have two numbers: building an ad preview around warnings and blocks

#webdev #ux #javascript #testing

11 min read

SmokePDF

Oct 31

Cropping a PDF doesn't delete anything: what I found testing 6 tricky pages

#pdf #javascript #webdev #privacy

3 min read

Oct 31

A free, beginner-friendly TypeScript course for JavaScript developers: 33 written sessions, from your first type to a complete Node.js API.

#typescript #node #javascript #webdev

5 min read

Oct 31

I almost killed a project because my test harness was measuring its own bug

#a11y #javascript #testing #ai

11 min read

vault vult

Oct 31

How to Reverse Engineer a Web3 Frontend to Find Hidden API Endpoints

#web3 #cybersecurity #bugbounty #javascript

3 min read

Oct 31

How we compress a PDF to an exact size in the browser, with no upload

#javascript #webassembly #pdf #webdev

8 min read

utilvo

Oct 31

PDF N-Up Imposition and Form XObjects: 2D Affine Matrices in JavaScript

#javascript #programming #softwaredevelopment

6 min read

Chris Rodriguez

Nov 1

Label Promise.any() inputs so AggregateError.errors drive retries not mysteries

#javascript #programming #softwaredevelopment #tutorial

3 min read

Oct 31

A ChatGPT Share Link Could Run Code Through MathLive. MathLive 0.111.2 Now Checks Origins

#security #javascript #ai #webdev

7 min read

Alexander Denisov

Oct 30

Building hldays #7: Religious and cultural observances

#api #typescript #javascript #buildinpublic

8 min read

Oct 31

Building a Fitness Test Calculator: Why Lookup Tables Beat Formulas

#javascript #webdev #testing #tutorial

4 min read

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