Arrays are also reference types
The constructor creates the array
Object constructor type (base class for all types) Array constructor type
The exponentiation operator** 2**32-1 has the largest array capacity
arry.length If you reduce the value of length, it is equivalent to truncating the array. Don't use it like this!
Array literals create arrays Array indices start at 0
var arr = [1,2,'ss',true,{age:19},null,undefined]
traversing the array