Notes on Videos #5, 6, 7, 8, 9

Video Notes:

Video 5 of Node JS Tutorial, thenewboston

Video Name: Understanding References to Objects

- in node, everything is a reference

- everything is interconnected, as a reference

- == means it only compares the value

- === means it only compares type and value

Video 6 of Node JS Tutorial, thenewboston

Video Name: this

- "this" is a keyword

- used to refer to the thing that called it (can be an explicit object)

- a true or false situation

- if you make a function that does not belong to any object, it is global

- your entire program will then call it - refers to global

Video 7 of Node JS Tutorial, thenewboston

Video Name: Prototype

- can add cool methods or properties to objects in classes (a hierarchy system?)

- can add additional functions onto a user object

- every instance has access to new function

- use the command called "prototype"

Video 8 of Node JS Tutorial, thenewboston

Video Name: Modules

- files often can contain thousands of lines, as a result, it can get really messy, and unorganized

- code can be broken up into different files

- these files are called modules

- to make modules, you group similar code together

- ex: a streaming service like Netflix offers movies, TV shows, and more, the code could be broken up into modules, there would a module for movie-related code, and a module for TV show-related code

- modules, therefore, are more specific

- to do this, you would make a new file

- code can be specifically exported into the main app file

- "module.exports" is the command that determines what code will be exported, and when you type this keyword, you can tag on any variable in the code

- to import another module, you set it equal to a variable

- use the keyword "require" to simply state: we are requiring a module, or code from a file

- ex: ./movies - look in the same directory looking for the movies.js

Video 9 of Node JS Tutorial, thenewboston

Video Name: More on Modules

- there are more efficient ways to export code

- a default module.exports is always running behind the scenes, when you type an edited module.exports, it will look for the code you referenced, and then export it

- you can write your functions directly in this object, so all the code is directly and simultaneously exported