What are the differences between Object and Map in JavaScript?

What are the differences between Object and Map in JavaScript?

In JavaScript, Objects are key-value pairs where keys are strings or symbols, while Maps can have keys of any type.

When should I use Map instead of Object?

Use Map when you need ordered keys, or when keys are not strings. Maps also have better performance for frequent additions and removals.

Can you give me an example of when to use each?

Sure! Use an Object for simple data structures like a configuration object, and a Map for dynamic collections like a frequency counter.

Are there any performance differences?

Yes, Maps generally perform better for large datasets, especially with frequent additions and deletions, due to their optimized structure.