[Property / Type] ajaxLoadingHTML String or Function [Required] no [Default] 'Searching …' [Example] ajaxLoadingHTML string ajaxLoadingHTML function [Description] 
An HTML string to display when searching for options. If ajaxLoadingHTML is a function, the first argument is the text that the user has entered and the second argument is the current value of the AutoComplete widget. The function should return an HTML string.