muhsalaa

function findAllHidden() {
  const all = document.getElementsByTagName('*');
  const hidden = [];
  for (let i = 0; i < all.length; i++) {
    if (window.getComputedStyle(all[i]).display === 'none') {
      hidden.push(all[i]);
    }
  }

  return hidden;

muhsalaa

// ref https://codepen.io/Pestov/pen/BLpgm

const tree = {
  root: {
    root1: { name: "Kakek", deceased: true },
    root2: { name: "Nenek", deceased: false },
    childs: [
      {
        name: "Anak 1",
        spouse: [{ name: "Istri anak 1", deceased: false, divorced: true }],

muhsalaa

/**
 * 58. Length of last word
 * https://leetcode.com/problems/length-of-last-word/
 */

const lengthOfLastWord = s => {
  s = s.trim().split(' ');
  const word = s[s.length - 1];
  return word.length;
};

muhsalaa

// simple function to check duplicate exist
function dupe(arr) {
  return [...new Set(arr)].length === arr.length
}

// BOW
const misuh_warning = [
  'asu','4su','45u','a5u',
]

muhsalaa

function findDupe(str) {
  let hash = {}
  for (let x of str) {
    hash[x] ? hash[x] += 1 : hash[x] = 1;
    if (hash[x] === 2) return x
  }
}

muhsalaa

function isExist(target, array) {
  let sorted = array.sort((a, b) => a - b);  
  let midPoint = Math.floor(sorted.length / 2);

  if (sorted[midPoint] === target) {
    console.log('exist');
  } else if (sorted.length <= 1) {
    console.log('not exist');
  } else if (sorted[midPoint] < target) {
    isExist(target, sorted.slice(midPoint, sorted.length));

muhsalaa

// with first convert to string
function isPalindrome(int) {
  if (int < 0) return false
  return  +(''+int).split('').reverse().join('') === int
}

// without convert to string (bukan aku yang kerjain, this is brilliant)
function isPalindrome(int){
    if(int<0) return false;
    let reverse=0;

muhsalaa

function sockMerchant(n, ar) {
    // create color hash
    const colors = {};
    // count total matches (pairs)
    let matches = 0;
    ar.forEach(x => {
      // if color with truthy value exist, increment pairs by 1 and set color to zero to make it falsy
      if (colors[x]) {
      	matches++;
        colors[x] = 0

muhsalaa

const nodemailer = require('nodemailer');
const smtpTransport = require('nodemailer-smtp-transport');

const transporter = nodemailer.createTransport(
  smtpTransport({
    service: 'yandex/google',
    host: 'smtp.yandex.ru/smtp.gmail.com',
    auth: {
      user: 'your@email.com',
      pass: 'yourEmailPassword',

muhsalaa

// question at https://muhsalaa.com/journal/3ab005b6-2c66-4ccc-b7bb-df1be5ff8777

function highlight(nominal, uniqueCode) {
  // convert number to string
  const totalString = String(nominal + uniqueCode);
  const nominalString = String(nominal);
  let count = 0;
  
  // loop to count similar character by comparing nominal and total (nominal+unique code)
  for (let x = 0; x < totalString.length; x++) {