ramsunvtech

var a = [1,2,3,1,1];
var b = [4,5,6,1];
var c = [1,1,1];

function sumArray(a,b,c) {
  const max = Math.max(a.length, b.length, c.length);
  const sumList = [];
  
  for(let i = 0; i < max; i++) {
    sumList.push((a[i] || 0) + (b[i] || 0) + (c[i] || 0));

ramsunvtech

flat([[1, 2], 3, [4], [5, 6]]); // [1, 2, 3, 4, 5, 6]

// Without .reduce() Function
function flat(list) {
 const flatList = [];
 list.forEach((item) => {
  if (Array.isArray(item)) {
     flatList.push(...item);
     return;
  }

ramsunvtech

function simpleFunction() {
   console.log(this); // window Object.
   console.log(arguments); // 1, 2, 3
}

simpleFunction(1, 2, 3);

const arrowFunction = () => {
   console.log(this); // window Object.
   console.log(arguments); // Reference Error

ramsunvtech

function add (a) {
  return function (b) {
    if(!b) {
       return a;
    }
    return add(a + b);
  }
}

add(1)(2)(3)(4)(5)() // 15

ramsunvtech

function add (a) {
  return function (b) {
    return a + b;
  }
}

add(1)(2) // 3

ramsunvtech

function groupBy(list, props) {
  return list.reduce((a, b) => {
     (a[b[props]] = a[b[props]] || []).push(b);
     return a;
  }, {});
}

// Usage.
groupBy([{
  id: 1,

ramsunvtech

/*
 * Below are the possible syntax errors with all stupid typo mistakes for const variables.
 * Tested in Chrome, Firefox, Safari and IE Edge.
 * Venkat.R
*/

// const a=
// Chrome - SyntaxError: Unexpected end of input
// Firefox - SyntaxError: expected expression, got end of script
// Safari - SyntaxError: Unexpected EOF

ramsunvtech

/*
 * Below are the possible syntax errors with all stupid typo mistakes for let variables.
 * Tested in Chrome, Firefox, Safari and IE Edge.
 * Venkat.R
*/

// let a=
// Chrome - SyntaxError: Unexpected end of input
// Firefox - SyntaxError: expected expression, got end of script
// Safari - SyntaxError: Expected an identifier but found 'a' instead

ramsunvtech

/*
 * Below are the possible syntax errors with all stupid typo mistakes for var variables.
 * Tested in Chrome, Firefox, Safari and IE Edge.
 * Venkat.R
*/

// var a=
// Chrome - SyntaxError: Unexpected end of input
// Firefox - SyntaxError: expected expression, got end of script
// Safari - SyntaxError: Unexpected EOF

ramsunvtech

const mocha = require('mocha');
const expect = require('chai').expect;
const sinon = require('sinon');
const db = require('./db');
const asyncFile = require('./parallel');
describe('Async Parallel.js', () => {
  let params, resultValues, userDataStub, activityDataStub, activityDataSpy;
before(() => {
    params = ['first arg', 'second arg'];
    resultValues = ['First Result', 'Second Result'];