Fork Copy setInterval(function () { let items = Array.from(document.querySelectorAll('#box span')); for (let i = 1; i < items.length; i++) { if (items[i].style.cssText == items[i - 1].style.cssText) { continue; } if (i == items.length - 1) { items[i].click(); return; } if (items[i].style.cssText == items[i + 1].style.cssText) { items[i - 1].click(); return; } items[i].click(); } }, 100)