Node Program 2

NODEPROGRAM2014

PRESENTERAzatMardan:

USFederalgovernmentStartups(Storify)Corporations(DocuSign)9booksonNode

@azat_cowebapplog.com

AGENDADAY11. Introductions2. JavaScriptFundamentals3. Break4. Node.jsFundamentals5. Debuggingandothertools6. NPM:utils,fs,buffer,url,path7. LearnYouNodeWorkshop8. Lunch9. HelloWorldServer10. Heroku11. StreamAdventureWorkshop12. FunctionalJavaScriptWorkshop

AGENDADAY21. NoSQLandMongoDB2. RESTAPI3. Break4. Express.jsFundamentals5. JadeandStylus6. ExpressRESTAPI7. ExpressWorksWorkshop8. Lunch9. Production10. Electivepersonalprojects

JAVASCRIPTFUNDAMENTALS

EXPRESSIVNESS

LOOSETYPINGstringbooleannumberregexpobject

OBJECTLITERALNOTATIONvarobj={a:4,b:9,x:"node.js"}

FUNCTIONS

varf=function(){...}

functionf2(){...}

functionf3(){...return"ok"}

ARRAYSvararr=[1,2,3]arr[0]//==1

PROTOTYPALNATUREPseudo-classical(new,Object,prototype)Functionalinheritancepattern

FUNCTIONALINHERITANCEvarvehicle=function(name){return{name:name,speed:0,accelerate:function(speedIncrease){this.speed+=speedIncreaseconsole.log(this)}}}

varcar1=vehicle('toyota')car1.accelerate(10)console.log(car1.name+'isgoingat'+car1.speed)

CONVENTIONSNamesIndentationSemi-colonsComma-firststyle

NOMODULES

CLOSURES

GLOBALANDPRIVATEVARS

IMMEDIATELY-INVOKEDFUNCTIONEXPRESSIONS

;(function(){...}())

KEYWORD"THIS"

PITFALLSLeakingvarsintoglobalspaceUsingwrong"this"contextUsingwrong==or===MissingbreakinaswitchcaseNotusing"return"whenneededDealingwithpseudo-classicalinheritance

EXERCISEWritea"class"bookwithfunctionalinheritancepattern:

TakesthenameoptionHasamethodreadthattakesnumberofpagesRemembersthenumberofthelastpageread

ANSWERvarbook=function(name){return{name:name,lastPageRead:1,read:function(pages){this.lastPageRead+=pages}}}

varpracticalNode=book('PracticalNode.js')practicalNode.read(101)console.log('lastpagereadfor'+practicalNode.name+'is'+practicalNode.lastPageRead)

NODE.JSFUNDAMENTALS

EVENTLOOPconsole.log('a')setTimeout(function(){console.log('b')},200)console.log('c')

NONBLOCKINGI/OGoogleChromeV8withC++andJS/ECMASuperefficient!CanbeblockedbysynccodeCanbeblockedbylotsofcomputations

READ-EVAL-PRINTLOOP(a.k.a.Console)inNode.js

$node-v$node>

LAUNCHINGNODE.JSSCRIPTS$nodeprogram.js$nodescript.js$node-e"console.log('helloworld')"

NODE.JSPROCESSINFORMATION$node-e"console.log(process)"

process.argvprocess.envprocess.pid

ACCESSINGGLOBALSCOPEINNODE.JSglobal

Never:

IMPORTINGANDEXPORTINGMODULESImport:

varfs=require('fs')varexpress=require('express')

Export:module.exports={...}module.exports=function(){...}exports.a=function(){}

exports=...

BUFFERBufferisaNode.jsbinarydatatype

__DIRNAMEVS.PROCESS.CWDvarpath=__dirname+fileNameconsole.log(process.cwd)

EXERCISE

Writetwofiles:

1. amodule2. aprogramthatexecutesamethodfromthatmodule

Program:

ANSWERModule(module.js):

exports.f=function(arr,num){returnarr.slice(num)}

varmodule=require('./module')vararr=[1,2,3]console.log(module.f(arr,2))//[3]

COREMODULESnoneedtoinstallwithNPM

NET

HTTP

PATH

FS

URL

STRINGDECODER

CRYPTO

DEBUGGINGANDOTHERTOOLSNodeInspectorWebStormnodemon/supervisor/forever/node-devForemanhttp-server/node-static(static)SublimeText2anditsplugins

NPM

[email protected]$npminstallexpress--save$npminstallexpress--save-dev

PACKAGE.JSON{"name":"stream-adventure","version":"2.5.0","description":"aneducationalstreamadventure","bin":{"stream-adventure":"bin/cmd.js"},"dependencies":{"hyperquest":"~0.1.6","ws":"~0.4.25"},"devDependencies":{"tape":"~2.3.0"}}

NODE_MODULES

NPMINSTALL-G

YOULEARNNODE$sudonpminstall-glearnyounode

WORKSHOPTIME

HELLOWORLDSERVER(localsetup)

TUTORIAL&CODE

6.1Node.jsinRapidPrototypingwithJSonpage139inprintand153inPDF.

HELLOWORLDSERVER(Herokudeployment)

NECESSARYCOMPONENTShttps://toolbelt.heroku.comSSHkeysSSHtoHerokuProcfile(web:nodeserver.js)package.json(npminit)

STEPSBRIEFLY1. Makeitworklocally2. AddProcfile,package.json3. $gitinit/add/gitcommit4. $herokucreate5. $gitpush...

TUTORIAL&CODE

6.1.4Deploying"HelloWorld"toPaaSinRapidPrototypingwithJSonpage139in

printand158inPDF.

STREAM

STREAMADVENTURE$sudonpminstall-gstream-adventure$stream-adventure

WORKSHOPTIME

FUNCTIONALJAVASCRIPT$sudonpminstall-gfunctional-javascript-workshop$functional-javascript-workshop

WORKSHOPTIME!

CHAT(run-timememorystore)

TUTORIALS&CODE

6.2Chat:Run-TimeMemoryVersioninRapidPrototypingwithJSonpages146inprint,and159inPDF.

Sourcecode:http://bit.ly/1usviBi

ENDPOINTSPOST/messages.jsonGET/messages.json

FILEStest.js:unittestsmb-server.js:server

MB-SERVER.JSPOST/messages/create.jsonGET/messages/list.json

util.inspectquerystring.parse

exports.getMessagesexports.addMessage

CURL$curlhttp://127.0.0.1:1337$curl-XPOST-d'name=azat&message=hi'http://127.0.0.1:1337

NODESCHOOLhttp://nodeschool.io

DAY2

AGENDADAY2Front-endandback-endoverviewNoSQLandMongoDBRESTAPIBreakExpress.jsFundamentalsJadeandStylusExpressRESTAPIExpressWorksWorkshopLunchProductionElectivepersonalprojects

FRONT-ENDANDBACK-ENDTraditionalwebThickclient/XHRweb

MONGODBBASICSNorelationaldataFast,scalable,andeasilydistributedUsesJavaScriptandBSON(~JSON)!!!

Commands:

Tools:webapplog.com/mongoui

$mongod$mongo

MONGOSHELL>usedbname>showcollections>db.local.find()>db.local.insert({a:1})

Mainmethods:>db.local.find({...})>db.local.insert({...})>db.local.save({...})>db.local.remove({_id:...})>db.local.update({_id:...})

EXERCISE1. StartMongoDBserver2. Createanobjectinacollectionusingshell3. Downloadmongouiandfindyourobject4. Updateyourobject,checkthechanges

NOSQLANDMONGODBPage168inRapidPrototypingwithJS(PDF)

Page154inprint6.4MongoDB

CHATRESTAPI(dbstore)

MONGOHQvaruri=process.env.MONGOHQ_URL||'mongodb://@127.0.0.1:27017'

$herokuaddons:addmongohq:sandbox

MONGODBLIBRARYhttps://github.com/mongodb/node-mongodb-native

Alternatives:MongoskinMongooseMonkMagnolia

TUTORIALS&CODE6.5Chat:MongoDBVersionpage176inPDFand158inprint

http://bit.ly/1AkobeN

EXPRESS.JSFUNDAMENTALS

APPSTRUCTURE

1. Includes2. Instantiations3. Configurations4. Middleware5. Routes6. Boot-up

MIDDLEWAREAlmostalwaysuse:staticbody-parserexpress-sessioncompressionallfromcheatsheet*

*http://bit.ly/Us2qbP

EXPRESS.JSSTACKJadeStylusMongooseorMongoskin

GENERATOR

$npminstall-gexpress-generator

OTHERFRAMEWORKSHapiSailsDerby

manyothersathttp://nodeframeworks.com

EXPRESS.JSHELLOWORLD

CHATRESTAPISERVER(Express.js)

INSPIRATIONCode:https://github.com/azat-co/rest-api-express

Description:http://bit.ly/1jy30tn

JADEANDSTYLUS

EXPRESSWORKSWORKSHOP

PRODUCTION

NODE.JSSTACKHerokuAWSwithNginx+VarnishCache+UpstartscriptsMongoDBorMongoHQ/MongoLab:Mongoskin,MongooseLoggingwithWinston,ElasticKibanaorPapartrailapp

TIPSDeploymentscriptswithSalt(saltstack.com)IncreaseMaxSocketsLockversionsDon'ttrustuserinputHavegooderrorhandlinginplaceUseupstartorforever

ELECTIVEPERSONALPROJECTSFull-stack*IntegrationDeployment

*Comeupwithanidea,e.g.,todoapp

FULL-STACKWriteanfront-endapplicationforChat(ordownloadBackbone.jsversionfromhttps://github.com/azat-co/rpjs/tree/master/board).

MakeitworkwithyourRESTAPIChatserver.

INTEGRATIONWriteanOAuth1.0serverthatcansigninwithTwitter(or

anotherprovider).

YoucanuseOAuth1.0SigninwithEveryauthfromIntroductiontoOAuthwithNode.js

DEPLOYMENT

DeployNode.jsapplication(HelloWorld)toAWS

ENDIfit'snotfun,it'snotJavaScript!

@azat_co

Documents

Node Program 2