Are JavaScript arrays actually linked lists?

Question

I\'m new to Javascript, and notice that you don\'t need to specify an array\'s size and often see people dynamically creating arrays one element at time. This would be a hug

Answer 1

Javascript arrays are typically implemented as hashmaps (just like Javascript objects) with one added feature: there is an attribute length, which is one higher than the highest positive integer that has been used as a key. Nothing stops you from also using strings, floating-point numbers, even negative numbers as keys. Nothing except good sense.