grokking

gistfile1.txt

function getTokens calls a rawString
toLowerCase converts this to lower case
split -- splits a string into an array of substrings, and returns the new array. In this case, any false strings 
will not appear in the resulting array.


function mostFrequentWord calls text using a good ol fashioned loop. a for loop executes a block of instructions a set
number of times. 
this loop will execute as many times as the parameters appear in the text.

the parameters are: if i is equal to or less than word.length, increment i each time the code block in the
loop is executed.


The Object.keys() method returns an array of a given object's own enumerable property names, 
in the same order as with a normal loop. In this instance we get back the keys of that object as an array.

In this instance the object.Keys will find the values for all the word frequencies, or how often they appear.

if (wordFrequencies[word] > currentMaxCount) 
Basically says if word frequencies is greater than current max count, then return the value of the current max key.. 
which is equal to??