Hi Zlatko, thanks for spending time in my question.
your soloution works fine for me Kind regards Alex Am Mittwoch, 8. August 2018 09:29:58 UTC+2 schrieb Zlatko Đurić: > > Hi Alex, > > Two things. First, as the error tells you, you need to use HttpHeaders, > not Headers. See here from your example: > > On Tuesday, August 7, 2018 at 7:02:01 PM UTC+2, [email protected] > wrote: >> >> >> import { HttpClient, HttpHeaders } from '@angular/common/http'; >> const headers = new Headers(); >> >> > You import HttpHeaders from Angular, and then use Headers > <https://developer.mozilla.org/en-US/docs/Web/API/Headers> (native to > browsers). You could mix them, but it's safer to use Angular's classes in > Angular environment, due to various reasons outside of the scope here. > > So use const headers = new HttpHeaders(); instead. > > > The other problem - HttpHeaders (the class from Angular import, the one > you actually need) is immutable. So you have to change this: > > const headers = new HttpHeaders(); > headers.append('appkey', '123'); > > Into this: > > let headers = new HttpHeaders(); > headers = headers.set('appkey', '123'); > > // or chain them all together this way: > > const headers = new HttpHeaders().set('appkey', '123').set('Content-Type', > 'application/json'); > > Anything you append to headers later in your code will not actually be > added. > > Zlatko > -- You received this message because you are subscribed to the Google Groups "Angular and AngularJS discussion" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/angular. For more options, visit https://groups.google.com/d/optout.
