#javascrip — Public Fediverse posts

Why does this JavaScript map drop entries?

Why does this JavaScript map drop entries in production. The JavaScript code uses JSON stringify as a map key, so object key ordering changes and collisions overwrite data. In JavaScript services this corrupts caches.

#whatswrongwiththisjavascriptcode #javascriptbug #javascriptproductionbug #javascriptdebugging #javascriptbackend #javascriptcodereview #javascriptsecurity #javascriptperformance #javascrip...

https://www.youtube.com/watch?v=Ff9tr-MYD5k

Why does this JavaScript retry charge customers twice?

Why does this JavaScript retry logic charge customers twice in production. The JavaScript code retries a payment call after a timeout without an idempotency key, so the gateway processes duplicates. In JavaScript billing services this creates double charges and refunds.

#whatswrongwiththisjavascriptcode #javascriptbug #javascriptproductionbug #javascriptdebugging #javascriptbackend #javascrip...

https://www.youtube.com/watch?v=5T-SagJUr8w

What's wrong with this JavaScript cache data?

What's wrong with this JavaScript cache data in a response handler. The JavaScript code caches a mutable array and returns it directly, so callers mutate shared state. In JavaScript services this causes ghost data.

#whatswrongwiththisjavascriptcode #javascriptbug #javascriptproductionbug #javascriptdebugging #javascriptbackend #javascriptcodereview #javascriptsecurity #javascriptperformance #javascrip...

https://www.youtube.com/watch?v=kYEdUmbJb2Y

What's wrong with this JavaScript setTimeout zero delay?

What's wrong with this JavaScript setTimeout zero delay not running first. The JavaScript code uses setTimeout 0 to defer but microtasks run first. In JavaScript the order of async work can surprise you.

#whatswrongwiththisjavascriptcode #javascriptbug #javascriptproductionbug #javascriptdebugging #javascriptbackend #javascriptcodereview #javascriptsecurity #javascriptperformance #javascrip...

https://www.youtube.com/watch?v=BFMnfNFew7I

Why does this JavaScript eval in JSON parse?

Why does this JavaScript eval in JSON parse allowing code execution. The JavaScript code uses eval or Function to parse JSON. In JavaScript this executes any code in the string.

#whatswrongwiththisjavascriptcode #javascriptbug #javascriptproductionbug #javascriptdebugging #javascriptbackend #javascriptcodereview #javascriptsecurity #javascriptperformance #javascriptreliability #javascriptapi #javascrip...

https://www.youtube.com/watch?v=UElA2CMyiHE

What's wrong with this JavaScript worker ack?

What's wrong with this JavaScript worker ack in a queue. The JavaScript code acknowledges the message before the database commit, so failures lose data permanently. In JavaScript pipelines this creates silent gaps.

#whatswrongwiththisjavascriptcode #javascriptbug #javascriptproductionbug #javascriptdebugging #javascriptbackend #javascriptcodereview #javascriptsecurity #javascriptperformance #javascrip...

https://www.youtube.com/watch?v=AyZEdp_zsnw

Why does this JavaScript reduce crash on empty array?

Why does this JavaScript reduce crash on empty array in aggregation. The JavaScript code calls reduce without an initial value. In JavaScript when the array is empty it throws. In JavaScript dashboards empty states break the app.

#whatswrongwiththisjavascriptcode #javascriptbug #javascriptproductionbug #javascriptdebugging #javascriptbackend #javascriptcodereview #javascriptsecurity #javascrip...

https://www.youtube.com/watch?v=N9PasMctYp4

What's wrong with this JavaScript JSON parse?

What's wrong with this JavaScript JSON parse in an API handler. The JavaScript code checks a parsed object with a truthy test and rejects valid empty payloads. In JavaScript services this drops legitimate requests.

#whatswrongwiththisjavascriptcode #javascriptbug #javascriptproductionbug #javascriptdebugging #javascriptbackend #javascriptcodereview #javascriptsecurity #javascriptperformance #javascrip...

https://www.youtube.com/watch?v=XQUEVCRx1Kw

What's wrong with this JavaScript order by?

What's wrong with this JavaScript order by in a search endpoint. The JavaScript code interpolates a user supplied sort field into SQL, allowing injection. In JavaScript backends this exposes data and crashes queries.

#whatswrongwiththisjavascriptcode #javascriptbug #javascriptproductionbug #javascriptdebugging #javascriptbackend #javascriptcodereview #javascriptsecurity #javascriptperformance #javascrip...

https://www.youtube.com/watch?v=7_ouucGI2zU

Why does this JavaScript dedupe reorder results?

Why does this JavaScript dedupe reorder results in production. The JavaScript code uses a Set for dedupe but loses original order used for pagination. In JavaScript APIs this causes missing and duplicated items.

#whatswrongwiththisjavascriptcode #javascriptbug #javascriptproductionbug #javascriptdebugging #javascriptbackend #javascriptcodereview #javascriptsecurity #javascriptperformance #javascrip...

https://www.youtube.com/watch?v=rpN8CkIK2hA

【基礎から学ぶ JavaScript 入門 #1】フロントエンド開発でJavaScriptが必要な理由を解説！【ヤフー出身エンジニアが教える初心者向けプログラミング講座】

https://www.emilyselect.com/%e3%80%90%e5%9f%ba%e7%a4%8e%e3%81%8b%e3%82%89%e5%ad%a6%e3%81%b6-javascript-%e5%85%a5%e9%96%80-1%e3%80%91%e3%83%95%e3%83%ad%e3%83%b3%e3%83%88%e3%82%a8%e3%83%b3%e3%83%89%e9%96%8b%e7%99%ba%e3%81%a7javas/?feed_id=3949&_unique_id=696723c4098aa&Mastodon

#AJAX #IT大学 #JavaScript #JavaScriptAJAX #JavaScriptWeb #JavaScriptアプリ #JavaScriptエンジニア #JavaScriptできること #JavaScriptプログラミング #JavaScrip...

【基礎から学ぶ JavaScript 入門 #1】フロントエンド開発でJavaScriptが必要な理由を解説！【ヤフー出身エンジニアが教える初心者向けプログラミング講座】

https://www.emilyselect.com/%e3%80%90%e5%9f%ba%e7%a4%8e%e3%81%8b%e3%82%89%e5%ad%a6%e3%81%b6-javascript-%e5%85%a5%e9%96%80-1%e3%80%91%e3%83%95%e3%83%ad%e3%83%b3%e3%83%88%e3%82%a8%e3%83%b3%e3%83%89%e9%96%8b%e7%99%ba%e3%81%a7javas/?feed_id=3949&_unique_id=696723c4098aa&Mastodon

#AJAX #IT大学 #JavaScript #JavaScriptAJAX #JavaScriptWeb #JavaScriptアプリ #JavaScriptエンジニア #JavaScriptできること #JavaScriptプログラミング #JavaScrip...

【基礎から学ぶ JavaScript 入門 #1】フロントエンド開発でJavaScriptが必要な理由を解説！【ヤフー出身エンジニアが教える初心者向けプログラミング講座】

https://www.emilyselect.com/%e3%80%90%e5%9f%ba%e7%a4%8e%e3%81%8b%e3%82%89%e5%ad%a6%e3%81%b6-javascript-%e5%85%a5%e9%96%80-1%e3%80%91%e3%83%95%e3%83%ad%e3%83%b3%e3%83%88%e3%82%a8%e3%83%b3%e3%83%89%e9%96%8b%e7%99%ba%e3%81%a7javas/?feed_id=1927&_unique_id=68cb591b749fa&Mastodon

#AJAX #IT大学 #JavaScript #JavaScriptAJAX #JavaScriptWeb #JavaScriptアプリ #JavaScriptエンジニア #JavaScriptできること #JavaScriptプログラミング #JavaScrip...

Деструктуризация в JavaScript

Без сомнений, JavaScript — крайне популярный язык программирования. И разработчики постоянно создают обновления, которые позволяют писать код проще, короче и понятнее. Одним из таких инструментов стала деструктуризация — способ получения данных Привет, Хабр! Меня зовут Александр Дудукало, я автор

https://habr.com/ru/companies/selectel/articles/943736/

#javascript #selectel #js #javascrip #деструктуризация_в_JS #синтаксис #массив #деструктурировать_массив #уроки_программирования

Our small team vs millions of bots

https://www.fsf.org/blogs/sysadmin/our-small-team-vs-millions-of-bots

#fsf #freesoftware #ddos #javascrip #anubis #botnet #llm #scraper #crawler #proprietarysoftware #malware

Our small team vs millions of bots

https://www.fsf.org/blogs/sysadmin/our-small-team-vs-millions-of-bots

#fsf #freesoftware #ddos #javascrip #anubis #botnet #llm #scraper #crawler #proprietarysoftware #malware

Un collègue (@tmounier pour ne pas le nommer 😜) me demande comment se mettre à #JavaScript. 🧑‍💻

Comme pour le #HTML et le #CSS, je m'y suis collé avec #W3School : https://www.w3schools.com/js/

Il y a peut-être de meilleures façons et de meilleures ressources, mais celle-ci à l'avantage de regrouper beaucoup de contenu de différents langages. 🌐

Bonne soirée ! 🌃

#JS #JavaScrip #WWW #Appli #Application #AppliWeb #Numérique #Éducation #elearning

Just mistyped "JavaScrip" and now I know what the dystopian company cash for Oracle Corp will be called.

#Oracle #JavaScript #JavaScrip for your weekly rations from the company store.

Just mistyped "JavaScrip" and now I know what the dystopian company cash for Oracle Corp will be called.

#Oracle #JavaScript #JavaScrip for your weekly rations from the company store.

"7 More JavaScript Web APIs to Build Futuristic Websites you didn't Know 🤯 - DEV Community" https://dev.to/ruppysuppy/7-more-javascript-web-apis-to-build-futuristic-websites-you-didnt-know-50bg #webdev #javascrip

"7 More JavaScript Web APIs to Build Futuristic Websites you didn't Know 🤯 - DEV Community" https://dev.to/ruppysuppy/7-more-javascript-web-apis-to-build-futuristic-websites-you-didnt-know-50bg #webdev #javascrip

Programming 😭
#meme #java #c #javascrip #code #programming #language #programmingclub #rust

@amy i stumbled upon this and i thought it might be interesting for you. #webdevelopment #javascrip #react #redux #typescript https://www.reactiflux.com/learning