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import { useState, useEffect } from 'react';
const useWindowSize = () => {
  // IMPLEMENT
  const [size, setSize] = useState({width: window.innerWidth, height: window.innerHeight});
  useEffect(() => {
    const eventResize = () => {
    	setSize({width: window.innerWidth, height: window.innerHeight});
    }
    
    window.addEventListener('resize', eventResize);

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Sans jQuery

Events

// jQuery
$(document).ready(function() {
  // code
})

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/**
 * For accept the lazy loading to images you need just add
 * [data-lazy-src] with a path on image.
*/

export default (window.onload = () => {
	const images = document.querySelectorAll('[data-lazy-src]');
	
	if ('IntersectionObserver' in window) {
		let observer = new IntersectionObserver(

0632347878

RIGHT
  if (window.location.hash) {
    $('html, body').animate({
      scrollTop: $(window.location.hash).offset().top - 50
    }, 500);
  }
  
  
WRONG      
// let url = location.href;

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  if ('NodeList' in window && !NodeList.prototype.forEach) {
    console.info('polyfill for IE11');
    NodeList.prototype.forEach = function (callback, thisArg) {
      thisArg = thisArg || window;
      for (var i = 0; i < this.length; i++) {
        callback.call(thisArg, this[i], i, this);
      }
    };
  }

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window.location.href.split('/')[window.location.href.split('/').length - 1] !== ""

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$('.sme-form__form').validate({
  rules: {
   phone: {
    required: true,
    regex : /\+38\(0(50|63|66|67|68|73|91|92|93|94|95|96|97|98|99)\)-\d{3}(-\d{2})(-\d{2})/
  },
});

    $.validator.addMethod(
      "regex",

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case 1


// console.log(value.slice(5, 7));
      // if(value.slice(5, 7).includes('67'||'96'||'97'||'68'||'98'||'39'||'50'||'99'||'66'||'95'||'63'||'93'||'73')) {
      //   console.log('yyyyyyyyyyyyyyyyes');
      // }
      
      
      

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/_ ES6 _/
const isMomHappy = true;

// Промис
const willIGetNewPhone = new Promise(
    (resolve, reject) => { // fat arrow
        if (isMomHappy) {
            const phone = {
                brand: 'Samsung',
                color: 'black'

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/* ES5, using Bluebird */
var isMomHappy = false;

// Promise
var willIGetNewPhone = new Promise(
    function (resolve, reject) {
        if (isMomHappy) {
            var phone = {
                brand: 'Samsung',
                color: 'black'