<!DOCTYPE html>
<html>
<head>
<base href="." />
<title>Angular Playground</title>
<script src="https://unpkg.com/zone.js@0.7.2/dist/zone.js"></script>
<script src="https://unpkg.com/zone.js@0.7.2/dist/long-stack-trace-zone.js"></script>
<script src="https://unpkg.com/reflect-metadata@0.1.8/Reflect.js"></script>
<script src="https://unpkg.com/systemjs@0.19.41/dist/system.js"></script>
<script src="config.js"></script>
<script>
System.import('app')
.catch(console.error.bind(console));
</script>
</head>
<body>
<my-app>Loading...</my-app>
</body>
</html>
### Angular Starter Plunker - Typescript
Adapted from http://plnkr.co/edit/tpl:AvJOMERrnz94ekVua0u5 to use fixed
versions for all dependencies.
System.config({
//use typescript for compilation
transpiler: 'typescript',
//typescript compiler options
typescriptOptions: {
emitDecoratorMetadata: true
},
paths: {
'npm:': 'https://unpkg.com/'
},
//map tells the System loader where to look for things
map: {
'app': './src',
'@angular/core': 'npm:@angular/core@2.3.0/bundles/core.umd.js',
'@angular/common': 'npm:@angular/common@2.3.0/bundles/common.umd.js',
'@angular/compiler': 'npm:@angular/compiler@2.3.0/bundles/compiler.umd.js',
'@angular/forms': 'npm:@angular/forms@2.3.0/bundles/forms.umd.js',
'@angular/http': 'npm:@angular/http@2.3.0/bundles/http.umd.js',
'@angular/platform-browser': 'npm:@angular/platform-browser@2.3.0/bundles/platform-browser.umd.js',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic@2.3.0/bundles/platform-browser-dynamic.umd.js',
'@angular/router': 'npm:@angular/router@3.3.0/bundles/router.umd.js',
'@angular/core/testing': 'npm:@angular/core@2.3.0/bundles/core-testing.umd.js',
'@angular/common/testing': 'npm:@angular/common@2.3.0/bundles/common-testing.umd.js',
'@angular/compiler/testing': 'npm:@angular/compiler@2.3.0/bundles/compiler-testing.umd.js',
'@angular/platform-browser/testing': 'npm:@angular/platform-browser@2.3.0/bundles/platform-browser-testing.umd.js',
'@angular/platform-browser-dynamic/testing': 'npm:@angular/platform-browser-dynamic@2.3.0/bundles/platform-browser-dynamic-testing.umd.js',
'@angular/http/testing': 'npm:@angular/http/bundles@2.3.0/http-testing.umd.js',
'@angular/router/testing': 'npm:@angular/router/bundles@3.3.0/router-testing.umd.js',
'rxjs': 'npm:rxjs@5.0.0-rc.4',
'typescript': 'npm:typescript@2.1.4/lib/typescript.js'
},
//packages defines our app package
packages: {
app: {
main: './main.ts',
defaultExtension: 'ts'
},
rxjs: {
defaultExtension: 'js'
}
}
});
import 'rxjs/add/operator/toPromise';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './app.module';
platformBrowserDynamic().bootstrapModule(AppModule)
import { Component, OnInit } from '@angular/core';
import { PriceService } from './price.service';
@Component({
selector: 'my-app',
template: `
<div>
<h2>Bitcoin Price</h2>
<p>1 BTC = {{ price }} {{ currency }}</p>
</div>
`,
})
export class AppComponent implements OnInit {
currency = 'USD';
price: number;
constructor(private priceService: PriceService) { }
async ngOnInit() {
this.price = await this.priceService.getPrice(this.currency);
}
}
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { HttpModule } from '@angular/http';
import { PriceService } from './price.service';
import { AppComponent } from './app.component';
@NgModule({
imports: [ BrowserModule, HttpModule ],
declarations: [ AppComponent ],
providers: [ PriceService ],
bootstrap: [ AppComponent ]
})
export class AppModule { }
import { Injectable } from '@angular/core';
import { Http } from '@angular/http';
@Injectable()
export class PriceService {
private currentPriceUrl = 'http://api.coindesk.com/v1/bpi/currentprice.json';
constructor(private http: Http) { }
async getPrice(currency: string): Promise<number> {
const response = await this.http.get(this.currentPriceUrl).toPromise();
return response.json().bpi[currency].rate;
}
}