saifsmailbox98

You first need to insert the item to the end of the array arr using the method push() on the array arr. And then remove and return the first element of the array using shift() method on the array arr.

• push(): Add items to then end of an array. push() returns the new array length.
• shift(): Remove an item from the beginning of an array. shift() returns the removed item.
• pop(): Remove an item from the end of an array. pop() returns the removed item.
• unshift(): Add items to the beginning of an array. unshift() returns the new array length.

saifsmailbox98

var obj = {

"name" : "Saif",
"username" : "saifsmailbox98"

}; //object

saifsmailbox98

Use the escape sequence from the table on the following sentence:

FirstLinenewline backslashSecondLinebackslash carriage-returnThirdLine

newline	\n
backslash	\\
carriage-return	\r

saifsmailbox98

Make a new folder (aka directory)

$ mkdir <FOLDERNAME>

Navigate into an existing folder (aka change directory)

$ cd <FOLDERNAME>

List the items in a folder

$ ls

Turn Git on for a folder

$ git init

Check status of changes to a repository

$ git status

saifsmailbox98

$ node -pe "require('url').parse('/test?q=1', true)"

Url {
  protocol: null,
  slashes: null,
  auth: null,
  host: null,
  port: null,
  hostname: null,
 hash: null,

saifsmailbox98

$ npm install jade --save
npm ERR! Linux 4.9.17-c9
npm ERR! argv "/home/ubuntu/.nvm/versions/node/v4.1.2/bin/node" "/home/ubuntu/.nvm/versions/node/v4.1.2/bin/npm" "install" "jade" "--save"
npm ERR! node v4.1.2
npm ERR! npm  v2.14.4
npm ERR! code ECONNREFUSED
npm ERR! errno ECONNREFUSED
npm ERR! syscall connect

saifsmailbox98

Name	Value
ONE HUNDRED	100
TWENTY	20
TEN	10
FIVE	5
ONE	1
QUARTER	0.25
DIME	0.10

saifsmailbox98

#	RN	#	RN	#	RN	#	RN	#	RN	#	RN	#	RN	#	RN	#	RN	#	RN
1	I	11	XI	21	XXI	31	XXXI	41	XLI	51	LI	61	LXI	71	LXXI	81	LXXXI	91	XCI
2	II	12	XII	22	XXII	32	XXXII	42	XLII	52	LII	62	LXII	72	LXXII	82	LXXXII	92	XCII
3	III	13	XIII	23	XXIII	33	XXXIII	43	XLIII	53	LIII	63	LXIII	73	LXXIII	83	LXXXIII	93	XCIII
4	IV	14	XIV	24	XXIV	34	XXXIV	44	XLIV	54	LIV	64	LXIV	74	LXXIV	84	LXXXIV	94	XCIV
5	V	15	XV	25	XXV

saifsmailbox98

var express = require("express");
var path = require("path");

var app = express();

var filePath = path.join(__dirname, "celine.jpg");

app.use(function(req, res, next){
    res.sendFile(filePath, function(err){
        if(err){

saifsmailbox98

    var mongo = require('mongodb').MongoClient
    var age = process.argv[2]
    
    var url = 'mongodb://localhost:27017/learnyoumongo'
    
    mongo.connect(url, function(err, db) {
      if (err) throw err
      var parrots = db.collection('parrots')
      parrots.find({
        age: {