Дмитрий Арушанов

import { get } from 'lodash'
let link = get(msg, 'attachments[0].audio_message.link_mp3', '')

const newArr = arr.map((n, i) => Array(i + 1).fill(n).join(''));

const newArr = arr.map((n, i) => Array(i + 2).join(n));

const newArr = [];

for (let i = 0; i < arr.length; i++) {
  let str = '';

  for (let j = 0; j <= i; j++) {
    str += arr[i];
  }

  newArr.push(str);
}

const newArr = [];

for (const n of arr) {
  let str = '';

  while ((str = str.concat(n)).length <= newArr.length) ;

  newArr[newArr.length] = str;
}

• Для pc Electron
  
• Сервис (back end) node.js, express
  
• Фронт angular, react или vue
  
• Для мобилок react native , ionic
  

• Для pc WPF клиент
  
• Сервис (back end) WEB API (ASP.NET)
  
• Фронт angular, react или vue
  
• Для мобилок xamarin
  

// содержит ли подстроку
console.log('Москва'.includes('Мо')) // true
console.log('Москва'.includes('Ро')) // false
// начинаетсяы ли с подстроки
console.log('Москва'.startsWith('Мо')) // true
console.log('Москва'.startsWith('Ро')) // false

<div id="someId">
  <!-- COMMENT One-->
  <!-- COMMENT Two -->
  <!-- {"json": true} -->
</div>

<output></output>

let out = document.querySelector('output');
let el = document.querySelector('#someId');

for (let i = 0; i < el.childNodes.length; i++) {
  let child = el.childNodes[i];
  if (child.nodeType == 8) {
    console.log(child.textContent);
    out.innerHTML += ' <br>  ' + child.textContent;
  }
}

decodeURIComponent(escape('Bj\u00c3\u00b6rn H\u00c3\u00bcttner'))

/**
 * Decodes utf-8 encoded string back into multi-byte Unicode characters.
 *
 * Can be achieved JavaScript by decodeURIComponent(escape(str)),
 * but this approach may be useful in other languages.
 *
 * @param   {string} utf8String - UTF-8 string to be decoded back to Unicode.
 * @returns {string} Decoded Unicode string.
 */
function utf8Decode(utf8String) {
    if (typeof utf8String != 'string') throw new TypeError('parameter ‘utf8String’ is not a string');
    // note: decode 3-byte chars first as decoded 2-byte strings could appear to be 3-byte char!
    const unicodeString = utf8String.replace(
        /[\u00e0-\u00ef][\u0080-\u00bf][\u0080-\u00bf]/g,  // 3-byte chars
        function(c) {  // (note parentheses for precedence)
            var cc = ((c.charCodeAt(0)&0x0f)<<12) | ((c.charCodeAt(1)&0x3f)<<6) | ( c.charCodeAt(2)&0x3f);
            return String.fromCharCode(cc); }
    ).replace(
        /[\u00c0-\u00df][\u0080-\u00bf]/g,                 // 2-byte chars
        function(c) {  // (note parentheses for precedence)
            var cc = (c.charCodeAt(0)&0x1f)<<6 | c.charCodeAt(1)&0x3f;
            return String.fromCharCode(cc); }
    );
    return unicodeString;
}

ввожу команду git init , дальше git remote add origin addres моего гита