Difference between revisions of "AngularJS HTTP module"

Revision as of 15:47, 2 January 2017

In AngularJS, the HTTP Module provides features for communicating with servers via HTTP.

It simplifies usage of the XHR and JSONP APIs.

The HTTP module API conveniently matches RESTful verbs.

It returns an observable object.

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-In [[AngularJS]], the Observable implements the [[Observer pattern]].
+In [[AngularJS]], the HTTP Module provides features for communicating with servers via HTTP.
-== Methods ==
+== Description ==
-* '''.subscribe''' = start and listen to an observable stream.
+It simplifies usage of the XHR and JSONP APIs.
-* '''.onNext''' = called when new data arrives.
-* '''.onError''' = called when error is thrown.
-* '''.onComplete''' = called when stream is completed.
-== Compare with promises ==
+The HTTP module API conveniently matches RESTful verbs.
-Observables are similar to promises.
+It returns an observable object.
-== toPromise ==
-Observables can be converted to promises using the '''toPromise''' method.
-== Error handling ==
-Chain the '''.catch''' method on an Observable.
-Pass in a callback sign a single '''error''' argument.
 == See also ==