Cacher is the code snippet organizer for pro developers

<input placeholder="Search Me" id="box" type="text" /> 

<ul class="navList">
    <li>apples</li>
    <li>apricots</li>
    <li>acai</li>
    <li>blueberry</li>
    <li>bananas</li>
    <li>cherry</li>
    <li>coconut</li>
    <li>donut</li>
    <li>durean</li>
</ul>

$('#box').keyup(function(){
   var valThis = $(this).val().toLowerCase();
    $('.navList>li').each(function(){
     var text = $(this).text().toLowerCase();
        (text.indexOf(valThis) == 0) ? $(this).show() : $(this).hide();            
   });
});