javascript - Use named function to catch errors in promises? -

-

i'm trying this:

var error = (reason) => {         console.log(reason);     };  //actually other promise promise.resolve()     .catch(error())     .then(render(req, res));

how can pass reason error function?

you have use catch(error) instead of catch(error()).

the catch method expects function argument. add named function itself, type error. if type error(), method executed first. result, log "undefined" and, function not return anything, evaluated "undefined" well. call catch(undefined).


Comments

Post a Comment

Popular posts from this blog

Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.12:test (default-test) on project.Error occurred in starting fork -

-
i searched on internet provided answers did not in building project. the error starting fork. tried following methods: mvn clean install -u when searched, people said because of java 7 , should work java 6. using java 6 only. some said set surefire plugin this: <groupid>org.apache.maven.plugins</groupid> <artifactid>maven-surefire-plugin</artifactid> <version>2.5</version> <configuration> <skiptests>false</skiptests> <testfailureignore>true</testfailureignore> <forkmode>once</forkmode> </configuration> the actual error is: [error] failed execute goal org.apache.maven.plugins:maven-surefire-plugin:2.12:test (default-test) on project junitcategorizer.instrument: error occurred in starting fork, check output in log -> [help 1] org.apache.maven.lifecycle.lifecycleexecutionexception: failed execute goal org.apache.maven.plugins:maven-surefire-plugin:2...
Read more

iis - ASP.Net Core CreatedAtAction in HttpPost action returns 201 but entire request ends with 500 -

-
i'm following[1] setting first .net core webapi (moving "old" webapi). when httppost action, in tutorial: [httppost] public iactionresult create([frombody] todoitem item) { if (item == null) { return badrequest(); } todoitems.add(item); return createdataction("gettodo", new { id = item.key }, item); } i httperror 500 after exiting controller. createdataction returns proper object status code 201 expect, , after method exits server somehow turns 500. don't seem able step rest of pipeline. trace gives me following error: 81. -general_request_entity 82. -notify_module_completion 83. -module_set_response_error_status [warning] 171ms modulename aspnetcoremodule notification execute_request_handler httpstatus 500 httpreason internal server error httpsubstatus 0 errorcode operation completed successfully. (0x0) configexcepti...
Read more