SanjeQi

const data = { username: 'example' };

fetch('https://example.com/profile', {
  method: 'POST', // or 'PUT'
  headers: {
    'Content-Type': 'application/json',
  },
  body: JSON.stringify(data),
})
  .then((response) => response.json())

SanjeQi

////////////////////////////////////////////////////Classes and subClasses

//ES5
var Person5 = function (name, yearOfBirth, job) {
  this.name = name;
  this.yearOfBirth = yearOfBirth;
  this.job = job;
};

Person5.prototype.calcAge = function () {

SanjeQi

Get the average pixels

function getAveragePixels(cssObj) {
	return Object
		.values(cssObj)
		.filter(el => el.includes('px'))
		.map(el => parseInt(el))
		.reduce((acc, nr, index, array) => acc = (acc + nr) / array.length)
}

SanjeQi

//npm install --dev eslint prettier eslint-config-airbnb@^15.0.1 eslint-config-prettier eslint-plugin-prettier eslint-plugin-react eslint-plugin-import eslint-plugin-jsx-a11y@^5.1.1

{
  "extends": ["airbnb", "prettier", "prettier/react"],
  "plugins": ["prettier"],
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 2016,
    "sourceType": "module",
    "ecmaFeatures": {

SanjeQi

GET      /newsletters                    # Show all newsletters
POST     /newsletters                # Create a new newsletter
GET      /newsletters/new          # Render the form for creating a new newsletter
GET      /newsletters/:id/edit     # Render the form for editing a newsletter
GET      /newsletters/:id          # Show a specific newsletter
PATCH    /newsletters/:id          # Update a newsletter
DELETE   /newsletters/:id          # Delete a newsletter
-----------------------------------------------------------------------------
  Nested Routes
#We often need to access resources as they relate to parent resources, and our RESTful 

SanjeQi

document.all;
// returns all the nodes inside the document object
 
document.contentType;
// returns the type of content contained. Most web pages should return "text/html"
 
document.URL;
// returns the URL of the document object
----------------------------------------------

SanjeQi

const alphabet = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 
                  'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'];
// => undefined

      alphabet.length;
      // => 26

      alphabet[alphabet.length - 1];
      // => "z"

SanjeQi

Number.isInteger()

  Number.isInteger(42);
  //=> true

  Number.isInteger(0.42);
  //=> false
------------------------------
Number.isFinite()
      Number.isFinite(9001);

SanjeQi

class SongsController < ApplicationController
    before_action :set_song, only: [:show, :edit, :update, :destroy]
    
  
     def index
       @songs = Song.all
     end
  
     def new

SanjeQi

class AuthorsController < ApplicationController

  def create
    @author = Author.new(author_params)
    if @author.valid?
       @author.save
       redirect_to author_path(@author)
    else
      render :new
    end