ristaa

/*
* Concatenation of arrays and remove duplicates from all of them
* @arguments Arrays
*/
concatArrays = (...arrays) => {
  var children = [].concat(...arrays);
  var returnArray = [...new Set(children)];
  
  return returnArray;
}

ristaa

/*
* Concatenation of arrays
* @arguments Arrays
*/

concatArrays = (...arrays) => {
  var children = [].concat(...arrays);
  
  return children;
}

ristaa

import React, { useState, useEffect } from "react";
import ReactDOM from "react-dom";

function hexToRgb(hex) {
  var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
  return result
    ? {
        r: parseInt(result[1], 16),
        g: parseInt(result[2], 16),
        b: parseInt(result[3], 16)

ristaa

var personObject = {
  name: "John Doe",
  ridingBike: function(){
    console.log(`I'm riding a bike, weeeeeeee!!!`);
  },
  walk: function(howMuch){
    console.log(`${this.name} was walking ${howMuch}`);
  }
};

ristaa

var basketballModule = (function(){
  var points = 0;
  
  return {
    twoPointsMade: function(){
      return points = points + 2;
    },
    
    threePointsMade: function(){
      return points = points + 3;

ristaa

// Spread operator
function fruits(apples, bananas, pears){
  console.log(apples);
  console.log(bananas);
  console.log(pears);
}
fruitsNo = [7, 9, 14];

fruits(...fruitsNo);
/*

ristaa

let firstString = `He says: "Ok, let's do that".`; // He says: "Ok, let's do that".

// Variable interpolation
let name = "Joe";
let secondString = `Hi, my name is ${name}.`; // Hi, my name is Joe.

// Expression interpolation
let isMarry = true;
let thirdString = `Please say hello to ${isMarry ? "Marry" : "Mike"}!`; // Please say hello to Marry!

ristaa

let baskets = [12, 5, 8, 130, 44];

function moreThanTenApples(element) { 
   return (element >= 10); 
} 

let passed = baskets.filter(moreThanTenApples); 
console.log("Those baskets have more than 10 apples: " + passed ); // "Those baskets have more than 10 apples: 12, 130, 44"

ristaa

let fruit = ['banana','pear','ananas', 'apple', 'peach'];
let stuffs = ['desk', 'pen', 'wardrobe'];

function findApple(newFruit){
  return newFruit==='apple';
}

console.log(fruit.find(findApple)); // "apple"
console.log(stuffs.find(findApple)); // undefined

ristaa

let arr = [1, 2, 3, 4, 5];

let doubled = arr.map(num => {
    return num * 2;
});

console.log(doubled); // [2, 4, 6, 8, 10]