Filter multiple lists with jQuery

Question

I have multiple lists on one page (multiple categories of products) like this:

Category 1

    
item1<         


        

Answer 1

How about something like this:

HTML

    
item1
    
item2
    
item3


    
item27
    
item28

JS

$(function(){

    $('input[type="text"]').keyup(function(){

        var searchText = $(this).val();

        $('ul > li').each(function(){

            var currentLiText = $(this).text(),
                showCurrentLi = currentLiText.indexOf(searchText) !== -1;

            $(this).toggle(showCurrentLi);

        });     
    });

});

http://jsfiddle.net/EFTZR/146/

Another solution using filter(), which is mentioned below:

$('input[type="text"]').keyup(function(){

    var that = this, $allListElements = $('ul > li');

    var $matchingListElements = $allListElements.filter(function(i, li){
        var listItemText = $(li).text().toUpperCase(), 
            searchText = that.value.toUpperCase();
        return ~listItemText.indexOf(searchText);
    });

    $allListElements.hide();
    $matchingListElements.show();

});

http://jsfiddle.net/EFTZR/441/