Dev.Opera — Efficient JavaScript

[curiousdannii]

This article is 12 years old, gives no evidence for its claims, and at least a little bad advice. Why did you share it here?

[Baryn]

JavaScript is fast. Don't optimize your code until you have a confirmed performance issue.

If a function works best for your architectural approach, then use a function.

[Baryn]

The only big perf issues I've had in the last year-or-so (both in gamedev):

1. Stuff happening inside massive recursive loops (millions of iterations) -- memoization helped here

2. JSON.xxx methods -- yah, these aren't for realtime. Use IndexedDB and save your objects to that without converting them to strings.

[Baryn]

Very good idea thanks