1、培訓過程中，如有部分內容理解不透或消化不好，可免費在以后培訓班中重聽；
        2、培訓結束后,授課老師留給學員聯系方式,保障培訓效果,免費提供課后技術支持。
        3、培訓合格學員可享受免費推薦就業機會。

Observables

Basic usage and terms
Defining observers
Subscribing
Creating observables
Multicasting
Error handling
The RxJS library

Creation functions
Operators
Common operators
Error handling
Handling failed observable
Naming conventions
Observables in Angular

Event emitter
HTTP
Async pipe
Router
Reactive forms
Practical usage

Type-ahead suggestions
Exponential backoff
Observables vs promises

Creation and subscription
Chaining
Cancellation
Error handling
Observables vs events API

Observables vs arrays