jquery.ajax หลังจากมัน success แล้ว ให้มันเอาค่าในตัวแปร ไปเก็บไว้ ที่ ตัวแปร global ด้วยได้มั้ยครับ

var xxx;
//---------------------------------------------------------------------
//searchDevices
	jQuery("#button_search_device").click(function(mouseEvent) {

		searchDevicesFlag = true;

		var xxx = jQuery("input#input_search_device_name").val();

		f = {
			groupOp : "AND",
			rules : []
		};

		if (input_search_device_name != '')
			f.rules.push({
				field : "display_name",
				op : "cn",
				data : xxx
			});

		jQuery.ajax({
			type : "POST",
			url : deviceNewFetchUrl,
			data : {
				_search : 'true',
				searchField : "display_name",
				rows : rowsPerPage,
				sidx : 'user_id',
				filters : JSON.stringify(f),
			},
			sync : true,
			dataType : "json",
			success : function clearAndAddMarkerLabel(json) {



				json.rows.forEach(function(userLocation) {
					dataUserLocation[userLocation.user_id] = userLocation;

					plotDeviceOnMap(userLocation);
				});
				
			},
			error : function() {
				alert("Error");
			}
		});
	});
	//end searchDevice--------------------------------------
//-------------------------------------------------------------------------------------------------
function showNextDeviceSearch() {
	var xxx

	searchDevicesFlag = true;

	f = {
		groupOp : "AND",
		rules : []
	};

	if (input_search_device_name != '')
		f.rules.push({
			field : "display_name",
			op : "cn",
			data : xxx
		});

	jQuery.ajax({
		type : "POST",
		url : deviceNewFetchUrl,
		data : {
			_search : 'true',
			searchField : "display_name",
			rows : rowsPerPage,
			sidx : 'user_id',
			filters : JSON.stringify(f),
		},
		sync : true,
		dataType : "json",
		success : function clearAndAddMarkerLabel(json) {


			json.rows.forEach(function(userLocation) {
				dataUserLocation[userLocation.user_id] = userLocation;

				plotDeviceOnMap(userLocation);
			});

		},
		error : function() {
			alert("Error");
		}
	});
};