AJAX search query returning JSON data from DB to populate UL

ajax_search.js

//Function to handle database search and process results
function getCustomers(searchQuery) {
	$.ajax({
		type: 'POST',
		url: '/com/cfcs/SearchServices.cfc?method=searchCustomerByName&customerName=' + searchQuery + '&returnFormat=json',
		datatype: 'json',
		cache: false,
		success: function(response)
		{
			var searchResults = response.DATA,
          destination = $("#searchResults"),
          str = '';

			destination.empty();
			if (searchResults.length === 0) {
			}
			for (var x = 0; x < searchResults.length; x++)
			{
				str += ("<li data-id=" + searchResults[x][0] + ">" + searchResults[x][1] + "</li>");
			}			
			destination.html(str).slideDown(250);
			$('#addCustomer').removeClass('loading');
			updateArray();
		}
	});	
}