jQuery autoComplete view all on click?

You can trigger this event to show all of the options:

$("#example").autocomplete( "search", "" );

Or see the example in the link below. Looks like exactly what you want to do.

http://jqueryui.com/demos/autocomplete/#combobox

EDIT (from @cnanney)

Note: You must set minLength: 0 in your autocomplete for an empty search string to return all elements.

I found this to work best

var data = [
    { label: "Choice 1", value: "choice_1" },
    { label: "Choice 2", value: "choice_2" },
    { label: "Choice 3", value: "choice_3" }
];

$("#example")
.autocomplete({
    source: data,
    minLength: 0
})
.focus(function() {
    $(this).autocomplete('search', $(this).val())
});

It searches the labels and places the value into the element $(#example)

I can't see an obvious way to do that in the docs, but you try triggering the focus (or click) event on the autocomplete enabled textbox:

$('#myButton').click(function() {
   $('#autocomplete').trigger("focus"); //or "click", at least one should work
});

In order to show all items / simulate combobox behavior, you should first ensure you have set the minLength option to 0 (default is 1). Then you can bind the click event to perform a search with the empty string.

$('inputSelector').autocomplete({ minLength: 0 });
$('inputSelector').click(function() { $(this).autocomplete("search", ""); });

try this:

    $('#autocomplete').focus(function(){
        $(this).val('');
        $(this).keydown();
    }); 

and minLength set to 0

works every time :)