enyo官方开发入门教程翻译一ConsumingWebServices

1 var transaction &＃61; function() {
2 // Create a transaction object.
3 var async &＃61; new enyo.Async();
4 // Cause handlers to fire asynchronously (sometime after we yield this thread).
5 // "initial response" will be sent to handlers as inResponse
6 async.go("intial response");
7 // Until we yield the thread, we can continue to add handlers.
8 async.response(function(inSender, inResponse) {
9 console.log("first response: returning a string,",
10 "subsequent handlers receive this value for &＃39;inResponse&＃39;");
11 return "some response";
12 });
13 return async;
14 };

1 // Get a new transaction; it&＃39;s been started, but we can add more handlers
2 // synchronously.
3 var x &＃61; transaction();
4
5 // Add a handler that will be called if an error is detected. This handler
6 // recovers and sends a custom message.
7 x.error(function(inSender, inResponse) {
8 console.log("error: calling recover", inResponse);
9 this.recover();
10 return "recovered message";
11 });
12
13 // Add a response handler that halts response handler and triggers the
14 // error chain. The error will be sent to the error handler registered
15 // above, which will restart the handler chain.
16 x.response(function(inSender, inResponse) {
17 console.log("response: calling fail");
18 this.fail(inResponse);
19 });
20
21 // Recovered message will end up here.
22 x.response(function(inSender, inResponse) {
23 console.log("response: ", inResponse);
24 });

1 getWoeid: function(inPlace) {
2 // set up enyo.AjaxProperties by sending them to the enyo.Ajax constructor
3 var x &＃61; new enyo.Ajax({url: "http://query.yahooapis.com/v1/public/yql?format&＃61;json"});
4 // send parameters the remote service using the &＃39;go()&＃39; method
5 x.go({
6 q: &＃39;select woeid from geo.placefinder where text&＃61;"&＃39; &＃43; inPlace &＃43; &＃39;"&＃39;
7 });
8 // attach responders to the transaction object
9 x.response(this, function(inSender, inResponse) {
10 // extra information from response object
11 var woeid &＃61; inResponse.data.query.results.Result.woeid;
12 // do something with it
13 this.setWoeid(inPlace, woeid);
14 });
15 }