How to change button text on click?

Question

JavaScript

How can I make the button change its name on each click? Thanks

Answer 1

btn.textContent = btn.classList.contains('show')
    ? 'Скрыть'
    : 'Показать';

Answer 2

<button id="btn" type="button" onclick="btnToggle(this);">
....
function btnToggle(obj){
   obj.innerText="new text";
};