javascript - jquery autocomplete this.source is not a function error

Question

I've implemented autocomplete on an input field, but the box does not show up and firebug returns "this.source is not a function". I've used autocomplete on other fields of the same page without any problems. (two textarea's).

I'm using the following code to debug, same effect if I run from script file or Firebug command line.

var fakedata = ['test1','test2','test3','test4','ietsanders'];
$("#omschrijving").autocomplete(fakedata);

running jquery 1.4.2 and jquery ui 1.8.2, both minified versions.

Does anyone have an idea how autocomplete works fine on the textareas but causes this malfunctioning on inputs?

Error & Stack trace:

this.source is not a function
http://facturatie.autodealers.nl/dev/resources/js/jquery-ui-1.8.2.custom.min.js
Line 570
close(Object { name="a"})jquery....min.js (regel 570)
close(Object { name="a"}, Object { name="c"})jquery....min.js (regel 570)
response()

Answer 1

Answer is that the first parameter of the autocomplete should be an object containing the "source" property. This works

var fakedata = ['test1','test2','test3','test4','ietsanders'];
$("#omschrijving").autocomplete({source:fakedata});