<a href="#" class="link">Инфо1</a>
<a href="#" class="link">Инфо2</a>
<a href="#" class="link">Инфо3</a>
<a href="#" class="link">Инфо4</a>
<a href="#" class="link">Инфо5</a>
<input type="text" id="textLink" value="">
const input = document.querySelector('#textLink');
const itemSelector = '.link';
document.addEventListener('click', e => {
const item = e.target.closest(itemSelector);
if (item) {
input.value = item.innerText;
}
});
document.querySelectorAll(itemSelector).forEach(function(n) {
n.addEventListener('click', this);
}, e => input.value = e.currentTarget.textContent);