JSFiddle - React, Tailwind, and code Playground

HTML

<div data-lego="react" class="modal__content">
  <div class="modal__title">Yeni Kayıt</div>
  <div class="modal__close-button modal__close-button_clickable"><span data-lego="react" class="icon icon_type_cross"></span></div>
  <div class="modal__body">
    <div class="org-switch__add-org-tip">Alan adınızı <span class="domain">domain.com</span> formatında girin</div>
    <div class="org-switch__add-org-name"><span data-lego="react" class="control textinput textinput_theme_normal textinput_view_classic textinput_size_m org-switch__add-org-input"><input data-lego="react" type="text" class="textinput__control" value="abdullah318.com"><span data-lego="react" class="textinput__box"></span></span></div>
  </div><span class="request-metadata modal__meta"></span>
  <div class="modal__actions modal__actions_side_right modal__actions_type_confirm"><button data-lego="react" type="button" autocomplete="off" aria-pressed="false" tabindex="0" aria-disabled="false" class="control button2 button2_view_default button2_tone_default button2_size_m button2_theme_pseudo modal__button modal__button_type_cancel"><span data-lego="react" class="button2__text">İptal</span></button><button data-lego="react" type="button" autocomplete="off" aria-pressed="false" aria-disabled="false" class="control button2 button2_view_default button2_tone_default button2_size_m button2_theme_action modal__button modal__button_type_confirm" tabindex="0"><span data-lego="react" class="button2__text">Etkinleştir</span></button></div>
</div>

JavaScript

var kackere=10;
var beklemesuresi=2000 //1000=1 saniye

function islem(counter) {

var yazilacakVeri=randomVeri(10);
$('.textinput__control').val(yazilacakVeri);
$('.modal__button_type_confirm').trigger('click');

console.log('Tıklandı.'+counter+' Veri:'+yazilacakVeri);
}

var counter = 0;

var looper = setInterval(function(){ 
    counter++;
    islem(counter);

    if (counter >= kackere)
    {
        clearInterval(looper);
    }

}, beklemesuresi);


function randomVeri(length) {
    var result           = '';
    var characters       = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    var charactersLength = characters.length;
    for ( var i = 0; i < length; i++ ) {
        result += characters.charAt(Math.floor(Math.random() * charactersLength));
    }
    return result;
}