Jquery fundamentals JS basics

jQuery is a library built on top of JS

variables are the way we store values and they can be text, numbers, data, and code

functions are how we wrap our code or pieces of functionality
 - function expressions are variables that point to a function 
 - function declarations are named functions
 
everything in JS is an obj expect - null, strings, booleans, numbers, and undefined
 
we can access properites with dot notation or with brackets

'this' is a special JS keyword that refers to the object that is in context to the function being called

everything is truthy execpt null, zero, undefined, NaN, and empty string

the or operator returns the first value that is truthy or last value
the and operator returns the first value that is false or last value