JSFiddle - React, Tailwind, and code Playground

JavaScript

const houseFloorSelected = 4;

[{floorNums:2,floorLink:3434}].forEach(function(item, resultArr) {

  let itemFloorNumber = item.floorNums;
  let itemFloorLink = item.floorLink;

  console.log('Номер этажа и тип: ' + itemFloorNumber + ' ' + typeof(itemFloorNumber));
  console.log('Ссылка этажа и тип: ' + itemFloorLink + ' ' + typeof(itemFloorLink));

  console.log(houseFloorSelected);  // undefined

  if(itemFloorNumber === houseFloorSelected) {
    console.log('match');
    page.goto(itemFloorLink);
  }
});