Today I Learned - Week 7

TIL_week7

---------6/12/2017------------
Javascript
It can return unexpected results
> 5 + "2" => "52"
> 5 - "2" => 3

parseInt("342")
342.toString()
type comparison: 5 === '5' => false (strict)
5 == '5' => true (loose)

Javascript falseys:
false, null, undefined, 0, "", NaN
Math.floor() round down the number (10.9 => 10)
Math.ceil() round up the number (10.9 => 11)

Javascript constructors: similar to Class in Ruby
function Car(model, make, year) {
this.model = model;
this.make = make;
this.year = year;