3lement3

const btn = document.querySelector('.btn-get-post');
const btnAddPost = document.querySelector('.btn-add-post');
const container = document.querySelector('.container');
function getPost(cb) {
    const xhr = new XMLHttpRequest();
    xhr.open('GET', 'https://jsonplaceholder.typicode.com/posts');
    xhr.send();
    xhr.addEventListener('load', () => {
        const responseJson = JSON.parse(xhr.responseText);
        cb(responseJson);

3lement3

/**
 * @type {DocumentFragment}
 */
const fragment = document.createDocumentFragment();
const colors = ['tomato', 'orange', 'red', 'yellow'];
const text = ['this is tomato', 'this is orange', 'this is red', 'this is yellow'];
const styles = ['tomato', 'orange','red','yellow'];

colors.forEach((value, index) => {
    const item = document.createElement('div');

3lement3

let str = 'i am in the easycode';
str.split(/\s+/).map((char) => char[0].toUpperCase() + char.substring(1)).join(' ');

3lement3

/**
 * Function array sum square
 * @param numbers
 * @returns {number}
 */
function squareSum(numbers) {
    let arrSum = numbers.map(value => value ** 2);
    let sum = 0;
    for (let i = 0; i < arrSum.length; i++) {
        sum += arrSum[i];

3lement3

/**
 * Creat prototype for object STRING where first letter to upper case
 *
 * @returns {string}
 */
String.prototype.toJadenCase = function () {
    return this.replace(/( |^)[а-яёa-z]/gi, function (string) {
        return string.toUpperCase();
    });
};

3lement3

/**
 *
 * @param a = array
 * @param b = array
 * @returns {*[]} difference between a and b
 */
function arr_diff(a, b) {
    let aa = [];
    let bb = [];
    for (let i = 0; i < a.length; i++) {

3lement3

const btn = document.querySelector('.btn');

btn.addEventListener('click', function () {
    var req = new XMLHttpRequest();
    var API_KEY = 'API_KEY';
    // Сохраняем адрес API
    var url = 'https://translate.yandex.net/api/v1.5/tr.json/translate';
    // Формируем полный адрес запроса:
    url += '?key=' + API_KEY; // добавляем к запросу ключ API
    url += '&text='; // текст для перевода

3lement3

const link = document.querySelector('.link');
link.addEventListener('click', function (ev) {
    ev.preventDefault();
    console.log(ev.type);
});
const textarea = document.querySelector('textarea');
const key = document.querySelector('.key');
textarea.addEventListener('keydown', function (ev) {
    if (ev.key === 'Enter') {
        ev.preventDefault();

3lement3

/*
*XMLHttpRequest
*/
const request = new XMLHttpRequest();
request.open('Get', '/data.txt');
request.send();
request.onload = function () {
    console.log(request.responseText);
};
/*

3lement3

/**
 * The Constructor Of The Parent
 * @param firstName
 * @param lastName
 * @constructor
 */
function User(firstName, lastName) {
    //this = {}
    this.firstName = firstName;
    this.lastName = lastName;