My first commit!

This is all notes.

Node.js® is a JavaScript runtime built on Chrome's V8 JavaScript engine. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient. Node.js' package ecosystem, npm, is the largest ecosystem of open source libraries in the world.

A Node Module is a modular application of code. This allows it to fit into other parts of code, like an assembly line of code with multiple replaceable parts.

NPM is Node Package Manager. It's a tool the lets us access the node module ecosystem and add them to our code.

A package.json is the master file the keeps track of all the useful node modules for a project.

To add a package.json to a project, run the commandc npm init and accept all defaults.

---

git add -A git commit -m "commit message here" git push origin master

---

example node_module: [Moment.js] https://momentjs.com

Node HTTP SErver

WE used the node module HTTP to build a simple web server which we can run using the localhost. this example would use a browser address of "localhost:3000".

// Date: 22 June 2017
var http = require('http');
// console.log(http);

http.createServer(function(request, response) {
  response.writeHead(200, {'Content-Type':'text/plain'});
  response.end("Hello World!"); //fires when response is complete
}).listen(3000, function() {
  console.log("App is listening on port 3000")
});

Express Web server

Express API

To add express node module to our application: sudo npm install --save express To ensure it was added right, check package.json for

"dependencies": {
  "express": "^4.15.3"
}```

This also gives us a ton of code we don't need, so we make a `.gitignore` file with `touch .gitignore` and write in it `node_modules/`.

### Nodemon
Nodemon will watch our files autoatically and restart our server so we don't have to do it manually.

How to install: `sudo npm install -g nodemon`.

How to use: `sudo nodemon index.js`


###

In order to use Postman with req and res, you have to change to the "body" tab to put in keys (vars) and their values. 
```js
app.post('/movies', function(req, res) {

  var movie = {
    title: req.body.title,
    rating: req.body.rating,
    recommend: req.body.recommend
  };