Angular 2 Community FAQ

Table of Contents

General Angular 2 Questions

• When will Angular 2 be released?
• Seriously though, can I get an estimate?
• Is it ready for me?
• Beta
• Stability/Bugginess
  • Known Regressions
• API Stability
• Documentation
• Ecosystem
• Community/Blogs/Support/Etc...
• Do I have to use Typescript?
• Do I have to use a build system? What build system should I use?
  • Router
  • Internationalization
  • Animation
  • Twitter Bootstrap/Material Design

Setting up Angular 2 with...

• SystemJS
• Webpack
• JSPM
• Rollup
• ES5/ES6 (no ts)
• Others (are there any others?)

RxJS

• Adding operators (map is not defined)
  • Full RxJS
  • Individual Operators
• Loading operators individually for RxJS + Angular2 + SystemJS
  • Configuration for full RxJS
  • Configuration for individual observables / operators
    • Simpler configuration
    • Alternative configuration
  • Reference
• What are observables and where can I learn more about them and RxJS?
• Redux + Rx + Angular2 / ngrx
  • Redux
  • ngrx

Router

• How do I protect routes?
• How do I resolve data before a route activates?
• How do I handle invalid URLs?
• How do I add classes to elements that contain an active router link?
• How do I add optional parameters for a route?
• How do I make a breadcrumb component?
• How do I make router components and directives available for every component?
• How do I use regular expressions for a route?
• How do I dynamically configure routes

Forms

• Validation
  • Multiple Validators
  • Custom validation
  • Async Validators
  • Dependent Validators
• Complex Forms
  • Dependent Inputs
  • Form elements in sub components

Templates

• How do I make n elements in an *ngFor without a model?

Services and Components

• How do I create a service?
• How do I share a service instance between multiple components?
• How do I communicate between two sibling components?
• How do I communicate between components using a shared service?

Testing

• How do I test an error path with Http and MockBackend?

Making fun things

• Drag and Drop
• Other fun things...

Router

Any good tutorials for the Router?

Not yet, in the meantime you can look at this: https://www.youtube.com/watch?v=z1NB-HG0ZH4

You can also take a look at this Plunkr, which while complex, does just about everything you would want with the router. http://plnkr.co/edit/Bim8OGO7oddxBaa26WzR?p=preview

How do I do breadcrumbs with the Router?

How do I make the Router components and directives available for every component?

Forms

Validation

How do I use more than one validator on a single control?

How do I make a custom validator?

How do I make an async validator?

[How do I validate a control based on the value in another control?] (http://plnkr.co/edit/NqQhBPJJo1PzHfisvh9J?p=preview)

Complex Forms

How do I have a select box that is dependent on another select box

AKA: How do I make a state/province dropdown that changes contents when the country changes?

How do I have form elements in sub components