Improving the Quality of JavaScript Code

on YouTube ↗58m

" summary

Shows how to fix real JavaScript mistakes: prefer use const/let not var, prefer === over ==, enable "use strict" to catch undeclared variables, copy objects with spread to obey open/closed and DRY, and favor a functional pipeline (filter/map/reduce) to lower cognitive load. Recommends tooling and CI: npm install, npm test, then ESLint plus Plato in CI, with an example Plato score moving from 65% to 93% to 100% after refactoring.

AI-written summary · about

" chapters (9)

1. 0:00Principles of quality code
2. 2:21Avoiding design violations
3. 8:04Questioning and code quality
4. 12:34Specific JavaScript quirks
5. 17:42Modernizing variable usage
6. 26:22Functional programming style
7. 34:03Empathy and abstraction
8. 38:25Leveraging automation tools
9. 45:29Complexity and refactoring

" related talks

• 58mImproving Quality of JavaScript CodeVenkat Subramaniam · JS Fest 2019 Autumn
• 49mJavaScript: The Fascinating PartsVenkat Subramaniam · Jfokus 2023
• 01h 01mRediscovering JavaScriptVenkat Subramaniam · Great International Developer Summit 2025
• 56mThe Better PartsDouglas Crockford · JS Fest 2018
• 30mRefactoring large JavaScript codebasesMichele Riva · Øredev 2022
• 21mTesting Javascript: Building JavaScript applications you won't hateMichael Timbs · Laracon AU 2019
• 30m"JavaScript, the Real Bad Parts"John Paul · NationJS 2017
• 46mInvisible performance. How fast is your JavaScript code?Kiko Beats · Codemotion Madrid 2015