JavaScript

## command + option + J = open the console

5 primitive datatypes:
## numbers  
3/9.5/-10   
a % b: remainder operator

## strings  
"Hello World"/"43"
concatenation
escape character: \" \"   "hi\\">> "hi\"

## booleans  true/false 
## null
## undefined      null/undefined (value)

//this is the comments in js; clear()

var userName = prompt(): ask for some input, and it stores in a variable
alert(): be obnoxious, alert something in a pop-up
console.log(): print something to the console

== performs type coercion, while === does not

--------------------------------------------------------------------------------------------------------------------------
100th lecture! BOOM BOOM POW!

// If age is a perfect square
if(age % Math.sqrt(age) === 0) {
  console.log("Your age is a perfect square!");
}

While writing a WHILE loop, don't forget to include <script></script> in the html file.
str.indexOf("xxx") === -1: not there

// learn how to use Google:
function kebabToSnake(string) {
	// replace - with _, then return as string
	var result = string.replace(/-/g, "_")
	return result
}