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How to use the input's value as the source for the autocomplete, or better,

use a custom function plus the input's value as the source, a la facebook - like they do "just use "user value" as...

Image cropping with drag for the crop, a la facebook.
Drag the image to adjust. On profile picture - edit thumbnail.

Is there something similar available on the web?

I thought of a div...

I have the following autocomplete affecting the input with an id of "autocomplete". I want to affect a second input as something is selected with a different value than the label or the value, how...

$("#jTagLabel").autocomplete({
source: [
{
label: "aardvark",
...

How to mimic the GET method out of a url, example:
http://domain.com/search-results.html?r=word
how to retrieve word with the variable location.href

something that retrieves the letters after...