$(function(){
$('.target').click(function() { // click to empty element
$('.elements span:not(:empty):first').empty(); // empties first not empty element
});
});
<div class="well">
<p>
<span class="target btn btn-primary">click me to empty element</span>
</p>
<div class="elements alert alert-block">
<span class="label label-info">elment 1</span>
<span class="label label-info">elment 2</span>
<span class="label label-info">elment 3</span>
<span class="label label-info">elment 4</span>
<span class="label label-info">elment 5</span>
<span class="label label-info">elment 6</span>
<span class="label label-info">elment 7</span>
</div>
</div>
External resources loaded into this fiddle: