CISA's catalog of bad practices that are exceptionally risky.
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Nov 19, 2025 - Shell
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bad-practices
Here are 16 public repositories matching this topic...
This code is so bad, that it is worth sharing.
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Feb 12, 2024 - Python
A collection of purposefully bad user interface implementations
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Aug 26, 2023 - HTML
A collection of weird and awful FizzBuzz implementations
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Oct 5, 2019 - C++
Website with web performance and accessibility bad practices
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Oct 5, 2023 - CSS
Plug changes like HTMLInputElement.value into MutationObservers in 766 bytes. Framework agnostic!
npm library evil no-jquery vanilla-javascript npm-package vanilla-js shitty-code easy-to-use framework-agnostic no-dependencies vanillajs horrible htmlelement drop-in mutation-observer bad-practices dom-events worst-js easy-to-learn
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Apr 19, 2020 - JavaScript
Examples of DataBricks notebooks
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Dec 28, 2023 - Jupyter Notebook
👷 Replacement strategy of messy code because of the global
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Jul 9, 2021 - PHP
Example showing you what should NOT do when programming a JSP
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Dec 13, 2023 - Java
Why you shouldn't peek at significance levels to decide when to stop an experiment
experimentation ab-testing good-practices experimental-design bad-practices p-hacking early-stopping
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Aug 17, 2025 - HTML
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Aug 23, 2021 - JavaScript
Hacking a household budget (per moneysavingexpert.com)
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Jan 11, 2019 - JavaScript
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May 24, 2024 - PHP
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Jan 30, 2023 - SCSS
💩 JavaScript & TypeScript 反模式史诗级合集 - 展示了所有你不应该做的操作！从内存泄漏到类型安全破坏，从异步地狱到原型污染，这里应有尽有！警告：观看本代码可能导致笑死、崩溃或想转行！🚨
javascript typescript comedy type-safety memory-leak-detection bad-practices wtf-am-i-doing-with-my-life anti-patents how-not-to-code programing-humor async-hell programing-joke
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Nov 24, 2025 - TypeScript
First EVER Java application, please disregard.
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Dec 16, 2016 - Java
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