How to use AJAX in a dart with async = true

Question

I found a link for XMLHttpRequest

  final req = new XMLHttpRequest(); req.open('GET', '${Sections.home}/data/$name', false); req.send(); _htmlBody = req.responseText; 

Full source code

But this is for async = false , is there a working example async = true ?

Answer 1

Example: https://code.google.com/p/dart/source/browse/branches/bleeding_edge/dart/samples/belay/bcap/bcap_client.dart

  void privateInvoke(String ser, String method, String data, SuccessI ski, FailureI fki) { if (urlRegex.hasMatch(ser)) { var req = new XMLHttpRequest(); req.open(method, ser, true); req.on.readyStateChange.add(void _(evt) { if (req.readyState == 4) { if (req.status == 200) { ski(req.responseText); } else { fki(new BcapError(req.status, req.statusText)); } } }); req.send(data); return; } else { super.privateInvoke(ser, method, data, ski, fki); } } 

also another asynchronous example at https://code.google.com/p/dart/source/browse/branches/bleeding_edge/dart/client/samples/total/src/ServerChart.dart

 XMLHttpRequest request = new XMLHttpRequest(); request.on.readyStateChange.add((Event event) { if (request.readyState == XMLHttpRequest.DONE && request.status == 200) { callback("data:image/png;base64,${StringUtils.base64Encode(request.responseText)}"); } }); ... request.open("POST", url, true, null, null); request.setRequestHeader("Content-type", "text/plain"); request.overrideMimeType("text/plain; charset=x-user-defined"); print("Chart request: ${data}"); request.send(data);