autocomplete: how do I avoid a duplicate search?

I use JQuery plugin autocomplete as a kind of dataset chooser. If the user chooses a value from the autocomplete lookup, the database is queried for the matching dataset. If the user types in a new value, the user can enter a new dataset. An issue arises when the user types in an existing value rather than choosing it from the开发者_StackOverflow autocomplete lookup. When this is done, the autocomplete .result() method is not called and no dataset is retrieved. To fix this I added a .blur(function(){$(this).search();}); to the input element. This fixed the original problem.

Now I have the problem that .result() fires on selection from lookup AND on blur. I would like .result() to fire on selection from lookup OR on blur. How do I make that happen?

Here is my code:

$('#groupset').autocomplete('ajax/php/leeruns.php');
$('#groupset').result(
    function(event, data, formatted) {
        if(data){
            $('#groupsetdesc').val(formatted);
            groups.load(data[1]); //retrieve matching dataset
        } else {
            $('#groupsetdesc').val('');
        }
    }
).blur(function(){$(this).search();});

---

You could store the current value of data in a persistent variable called previous and not load the dataset if it is the same.

var loaded_previous;
$('#groupset').autocomplete('ajax/php/leeruns.php');
$('#groupset').result(
function(event, data, formatted) {
    if(data && data[1] != loaded_previous){
        loaded_previous = data[1];
        $('#groupsetdesc').val(formatted);
        groups.load(data[1]); //retrieve matching dataset
    } else {
        $('#groupsetdesc').val('');
    }
}
).blur(function(){$(this).search();});