Update ke Angular 4.0.0

Angular4

Updating to 4 is as easy as updating your Angular dependencies to the latest version, and double checking if you want animations. This will work for most use cases.

On Linux/Mac: 
npm install @angular/{common,compiler,compiler-cli,core,forms,http,platform-browser,platform-browser-dynamic,platform-server,router,animations}@latest typescript@latest --save

On Windows:
npm install @angular/common@latest @angular/compiler@latest @angular/compiler-cli@latest @angular/core@latest @angular/forms@latest @angular/http@latest @angular/platform-browser@latest @angular/platform-browser-dynamic@latest @angular/platform-server@latest @angular/router@latest @angular/animations@latest typescript@latest --save


Then run whatever ng serve or npm start command you normally use, and everything should work.
If you rely on Animations, import the new BrowserAnimationsModule from @angular/platform-browser/animations in your root NgModule. Without this, your code will compile and run, but animations will trigger an error. Imports from @angular/core were deprecated, use imports from the new package import { trigger, state, style, transition, animate } from '@angular/animations';.
We are beginning work on an interactive Angular Update Guide if you would like to see more information about making any needed changes to your application.

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Syntax Perulangan di Angular4

Angular4

Improved *ngIf and *ngFor
Our template binding syntax now supports a couple helpful changes. You can now use an if/else style syntax, and assign local variables such as when unrolling an observable.

<div *ngIf="userList | async as users; else loading">
  <user-profile *ngFor="let user of users; count as count; index as i" [user]="user">
User {{i}} of {{count}}
  </user-profile>
</div>
<ng-template #loading>Loading...</ng-template>

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