Comment by ajsdhg

items = () => [...document.querySelectorAll('.items div.item')] show = (elt) => elt.style.display='' hide = (elt) => elt.style.display='none' search = (text) => (items().forEach(show), items().filter(e => !e.innerText.toLowerCase().includes(text.toLowerCase())).forEach(hide)) inputElt = document.createElement('input'); inputElt.type='text'; document.querySelector('.sidebar').prepend(inputElt) function handle(e) { search(e.target.value) } inputElt.addEventListener('input', handle) reply