jQuery UI autocomplete on select input box

I have JSON data feeding id, label and value as keys for values.

When I select data I select the label/value values onto the textbox #id_emp_name. I want to be able to insert the id of the label/value that was selected into the hidden textbox #id_emp_id.

My current javascript code:

$('#id_emp_name').autocomplete({
    source: '/best_choose/employees.json',
    min开发者_StackOverflow社区Length: 1,
    dataType: 'json',
    max: 12
});

Use the "select" option of autocomplete to define a function to handle selections:

$('#id_emp_name').autocomplete({
    source: '/best_choose/employees.json',
    minLength: 1,
    dataType: 'json',
    max: 12, 
    select: function(event, ui) { 
         $('#id_emp_id').val(ui.item.id);
    }
});