Statistics Denmark and Statistics Norway support the JSON-stat format. In this example, CPI (12-month rate) is retrieved from both sources, processed with the JSON-stat Javascript Toolkit and finally visualized with Idescat Visual.
Because data are retrieved asynchronously and the chart must wait to have all data, in this example, JSONstat() is called inside JSONstat(). This works in this simple scenario because only two different sources of data are used. For a more generalized approach, see Inflation in different countries.