Float event DOM node
HTML
<ul id="ul">
<li>First</li>
<li>Two</li>
<li>Three</li>
</ul>
<input type='text' id='input'>
JavaScript
var input = document.getElementById('input');
var ul = document.getElementById('ul');
ul.addEventListener('click', function(e) {
e.stopPropagation();
input.value = e.target.innerHTML;
}, false);