const foldBtns = document.getElementsByClassName('fold-button')

for (const btn of foldBtns) {
    btn.addEventListener('click', function (event) {
        event.preventDefault()
        console.log('you clicked ', event.target)
        const div = event.target.parentElement.getElementsByClassName('one-post-content')[0]
        div.classList.toggle('hidden')
        btn.innerHTML = div.classList.contains('hidden') ? 'Показать' : 'Скрыть'
    })
}