Hashtable vs objects In javascript

Question

I’m new to data structure and I’m learning it in Javascript.

My Question is: Why do we need hash tables when we 've objects in javascript? Can anybody give me a situation where hash tables will be more useful than objects?

Answer 1

"Hashtable" is called different things in different languages. Java has Hashtable and HashMap, Ruby has Hash, Python has dict... in JavaScript, it's called Map.

Objects' keys are limited to strings; Map keys can be anything.

Objects support inheritance; a Map only contains what is specifically put into it.