run_autocomplete.js

jQuery( document ).ready( function( $ ) {
	$('#s').autocomplete({
		serviceUrl: '/wp-admin/admin-ajax.php?action=autocompleteCallback',
		dataType: 'json',
		paramName: 'term',
		transformResult: function(response) {
	        return {
	            suggestions: $.map(response.results, function(dataItem) {
	                return { value: dataItem.title, data: dataItem.url };
	            })
	        };
    	},
    	onSelect: function(suggestion) {
    		window.location.replace(suggestion.data);
    	}
	});
});