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Dynamically Add a Component
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<meta charset="UTF-8"> | |
<title>RxJSCraft</title> | |
<script src="https://npmcdn.com/angular2/bundles/angular2-polyfills.js"></script> | |
<script src="https://npmcdn.com/[email protected]/dist/system.js"></script> | |
<script src="https://npmcdn.com/[email protected]/lib/typescript.js"></script> | |
</head> | |
<body> | |
<app></app> | |
<script> | |
SystemJS.config({ | |
transpiler: "typescript", | |
typescriptOptions: { | |
emitDecoratorMetadata: true | |
}, | |
map:{ | |
rxjs: 'https://npmcdn.com/rxjs', | |
angular2: 'https://npmcdn.com/angular2' | |
}, | |
packages: { | |
"src": { | |
"main": "main", | |
"defaultExtension": "ts" | |
} | |
} | |
}); | |
System.import('src'); | |
</script> | |
</body> | |
</html> |
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import {Component, DynamicComponentLoader, ElementRef, Injector} from 'angular2/core' | |
import {Observable} from 'rxjs/Observable'; | |
import {Subject} from 'rxjs/Subject'; | |
import 'rxjs/add/observable/fromPromise'; | |
import 'rxjs/add/observable/interval'; | |
import 'rxjs/add/operator/switchMap'; | |
@Component({ | |
selector: 'app', | |
template: ` | |
<div> | |
<button (click)="click$.next('person')">Add a Person</button> | |
<button (click)="click$.next('car')">Add a Car</button> | |
<div #loadTarget></div> | |
</div> | |
` | |
}) | |
export class App { | |
click$ = new Subject(); | |
constructor( | |
private _loader:DynamicComponentLoader, | |
private _ref:ElementRef, | |
private injector:Injector | |
) { | |
const loadComp = comp => Observable | |
.fromPromise( | |
this._loader.loadIntoLocation( | |
//the injector looks up the component by string | |
this.injector.get(comp), | |
this._ref, | |
'loadTarget' | |
) | |
); | |
this.click$ | |
//pass the 'string' from the click to the loadComp | |
.switchMap(compName => loadComp(compName)) | |
.subscribe(comp => comp.instance.id = Math.random()); | |
} | |
} |
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import {Component, Input} from 'angular2/core'; | |
@Component({ | |
selector: 'car', | |
template: ` | |
<style>div{border: 2px dashed red}</style> | |
<div>Car's id: {{id}}</div> | |
`, | |
}) | |
export class Car { | |
@Input() id; | |
} |
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import {bootstrap} from 'angular2/platform/browser'; | |
import {provide} from 'angular2/core'; | |
import {Person} from './person'; | |
import {Car} from './car'; | |
import {App} from './app'; | |
bootstrap(App, [ | |
provide('person', {useValue: Person}), | |
provide('car', {useValue: Car}) | |
]) | |
.catch(console.log.bind(console)); |
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import {Component, Input} from 'angular2/core'; | |
@Component({ | |
selector: 'person', | |
template: ` | |
<style>div{border: 2px solid blue}</style> | |
<div>My id: {{id}}</div> | |
`, | |
}) | |
export class Person { | |
@Input() id; | |
} |
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