Sep 6 • 🎙️ Share
Map vs Object – Which Should You Use?
The more I continue to develop Gextron dot com, I catch myself using Map a lot more than plain objects.
They're both let you store key-value pairs, but they're not the same thing...
Object:
- Keys are always strings
- Great for config records or user objects
- Easy to convert to JSON (which is really important)
But are really annoying when you want to loop over the object. You don't get direct access to both keys and values the way you do with a Map. You have to use helper functions like Object.keys(), Object.values(), or Object.entries() [IMG 2]
Maps is a lot cleaner.
- Always preservers insertion order
- Fast for frequent add/remove operations
- Helpful helpers: .size, keys(), values(), entries()
👉 Takeaway: Map is built for iteration, while Object needs workarounds.
What about you⁉️
Have you ever switched from Object → Map and instantly solved a bug or performance issue?
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Map vs Object – Which Should You Use?
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