mendoSort.js

const titleEl = document.querySelector('.training-content > table:nth-child(1) > caption:nth-child(1)')

const sortButton = document.createElement('button');
sortButton.innerText = 'Сортирај';
sortButton.style.setProperty('float', 'right');
sortButton.addEventListener('click', () => {
	document.querySelector('body > div.page-container > div.main > div.main-content > div:nth-child(3) > div > table > tbody').innerHTML = [...document.querySelectorAll('body > div.page-container > div.main > div.main-content > div:nth-child(3) > div > table > tbody > tr > td:nth-child(5) > a')].sort((a, b) => +a.innerText.match(/(?<= \()\d+/)[0] > +b.innerText.match(/(?<= \()\d+/)[0] ? -1 : +a.innerText.match(/(?<= \()\d+/)[0] < +b.innerText.match(/(?<= \()\d+/)[0] ? 1 : 0 ).map((a) => a.parentElement.parentElement.outerHTML).join('');
});

titleEl.appendChild(sortButton);