HTTP Error Handling Angular Tutorial 19

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http://youtube.com/watch?v=GKJsEZj5CPk

HTTP Error handling is one of those things no one really wants to deal with , well in angular its quite easy • Kindly share this video : • HTTP Error Handling - Angular (Tutori... • Hello everyone my name is nisha singla and I am back with my next tutorial on Error handling • in angular • In our previous video we have learnt how to make a http call to get the resources from RESTFUl • API and over there we had consumed a FAKE online REST API to get users information • As of now everything is working fine because we did everything right but in real life projects • things are not as simple as we have right now. Things can go wrong as well. Suppose • the API which we are calling is not working the way we are expecting. • May be the server is down ,internet connection is not avaibale or the URL is not correct or the user permission is denied . • So there could be many reason that can lead to the failure of this HTTP CALL and in that case we dont want that my user will see something which is not clear to them. • So let's see how to deal with the errors during HTTP CALL and to show how error handling • will work we are intentionally making a call to a wrong URL so that we can get error • In angular whenever we work with OBservable there are so many operators that is used • to implement some specific functionality so here we have such one operator that catch • the error raised by HTTP CALL and that is catch operator • you need to import catch operator , Observable and throw from rxjs • import rxjs/add/operators/catch ; • import rxjs/add/observable/throw ; • import Observable from 'rxjs/Observable ; • Now the error which we have catched in catch() that we need to capture in respective component where we are consuming this service. So in app.component.ts we have to call this : • In subscribe () method the first argument is the success callback and second is for handling error. • If you liked my channel , subscribe to it and like my videos. For any queries ask you question in comment section • Subscribe to my channel : • / nishasingla • Watch complete playlist here: • • Introduction- Angular (Tutorial #1) • • Follow us on: • Facebook: / angularjs4beginners • LinkedIn: / nisha-singla-82407aa0 • Website : • • For more such latest videos, please subscribe to our channel and stay connected. • If you face any problem in HTTP Error Handling then leave a comment below and let me know. I'll be happy to assist you.

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