Node.JS

Created by John on Feb 08, 2018

Node.JS is javascript running outside of your browser allowing you to access your machine/etc.

Express framework can be used build web site.

Command	Description
node -v	Display version
node	Run Node interpreter
node <file>	Run javascript file

Special Node.JS Javascript functions/objects

Command	Description
process	Show program process

var m2 = require('./module2');	Loads file module2 in current directory
console.log(m2);	Write to console
module.exports.a=a	Export variable a

Npm

Command	Description
npm install <module>	Will install module to your node_modules folder You can then use it in your script by using: var _ = require('underscrore');
npm init	Creates a package.json for your project listing dependencies that were installed.
npm install <package> -S	Add package and add it to the package.json file

Basic Web Server Example

var http = require('http');
var server = http.createServer(function(request,response){
  console.log('got a request');
  response.write('hi');
  response.end();
});
server.listen(3000);

Express.JS

Create an Express

> npm install -g express-generator

> express <app_name>

> cd <app_name> && npm install

> DEBUG=<app_name> ./bin/www

Your app is now running on http://localhost:3000/

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