First example is from parent to child. Child to parent. More complex example.
Use async pipe or unsubscribe properly. For example if you ignite a http get request by visiting X component and then route to Y component without waiting your get request to complete, your get request in X component still runs. There are several ways to handle that issue. First one is, using async pipe. Async […]
In some cases, for example you may need to get userId from httpclient request then use that userId in another client request. Well, if you’re a beginner you will think about to handle it in subscribe in subscribe. Do not use subscribe in subscribe. Use mergeMap instead. Here is my model file including Todo and […]