learnings

All the numbers by default are 64 bit floaitng
Arrays and Strings share the same length
Constructors are a way to make objects with the keyword new. The most basic constructor is the Object constructor, which will make an object with no methods or properties


There are only six falsy values in JavaScript so it is easiest to memorize those:

    false
    0 (zero)
    "" (empty string)
    null
    undefined
    NaN