Question

I’m trying to change the style from my AutoComplete result.

I tried:

// Only change the inputs
$('.ui-autocomplete-input').css('fontSize', '10px');
$('.ui-autocomplete-input').css('width','300px');

I searches and could not find out what the class used by the result is, so that I can change its font size and maybe its width.

Thanks.

Using:
jQuery-UI AutoComplete

EDIT: I need change the css from my result, that comes from my JSON, not from the input. The code you posted, only changes the input, not the result. This is why I asked for the class used by the result list (at least, I believe that is a list). I tried to use fb from ff and could not find it. Thanks again for your patience.

EDIT2: I’ll use the autocomplete from jQuery UI as example.

Check this to see the jQuery-UI auto-complete page

After I type “Ja” in the textbox from the front-page sample, Java and JavaScript will appear as Results, in the little box below the textbox.

This little box is what I want to change the CSS of. My code in the sample above only changes my textbox CSS (which I don’t need at all).

I don’t know if I’m being clear now. I hope so, but if not, please let me know; I’ll try harder if needed to show my problem.

The class for the UL that will contain the result items is what I need.

SOLUTION
As Zikes said in his comment on the accepted answer, here is the solution. You just need to put ul.ui-autocomplete.ui-menu{width:300px} in your CSS file.

This will make all the the results box css have width:300px (like the sample).

I forgot that the results object does not exist on page load, and therefor would not be found and targetted by a call to $('...').css(). You’ll actually need to put ul.ui-autocomplete.ui-menu{width:300px} in your CSS file, so that it will take effect when the results are generated and inserted into the page.
– Zikes

Answer 1

Information on styling the Autocomplete widget can be found here: http://docs.jquery.com/UI/Autocomplete#theming

Fiddle

HTML

<input type="text" id="auto">

jQuery

$('#auto').autocomplete({'source':
    ['abc','abd','abe','abf','jkl','mno','pqr','stu','vwx','yz']
});

CSS

ul.ui-autocomplete.ui-menu{width:400px}

/* 
    targets the first result's <a> element, 
    remove the a at the end to target the li itself 
*/
ul.ui-autocomplete.ui-menu li:first-child a{
    color:blue;
}