object drills 2

enroll in summer school

.map:
https://jsbin.com/yowisob/edit?js

for loop:
https://jsbin.com/yowisob/edit?js

find by id

for loop:
https://jsbin.com/gekane/edit?js

.find:
https://jsbin.com/gekane/edit?js

make student reports

for loop:
https://jsbin.com/xafejol/edit?html,js,console,output

.map:
https://jsbin.com/xafejol/edit?js

to do list factory

this one was also a bit of a pain in the neck. actually, it mostly had to do with 
the whole html method. i'm not quite sure how I was supposed to know how to figure that
wihtout having done any exercise like it, or even learning how to put together the various methods like
that. but that's fine. the 1st part of the exercise I got just fine. the html
method i did not. I just copied what you guys had there.

https://jsbin.com/notunaw/edit?js,console

validate object keys

couldn't get this one. wen't over it a few times and ended up taking a look at the answer.
I get why the answer works, but I don't understand why my answer didn't really work.
I did something like:

function validateKeys(obj, expectedKeys) {
  return Object.keys(object) == expectedKeys;
}

since the Object.keys(object) returns the exact same style array of keys
as is held in expected keys, I really don't understand why this doesn't work.
shouldn't 2 identical arrays of strings == each other? i thought the problem there
was only if I were to use the strict equality operator ===. anyhow, I get why your solution works
seems a bit convoluted to me, but it got all of the tests to pass so I guess I can't really say anything.

anyhow, here is the code I di once I had looked at the solution and worked through how it was working:

https://jsbin.com/kuneyug/edit?js