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$(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: