Created
December 8, 2017 11:01
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Angular: create dynamic component from service
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constructor( | |
private componentFactoryResolver: ComponentFactoryResolver, | |
private appRef: ApplicationRef, | |
private injector: Injector | |
) { } | |
appendComponentToBody(component: any) { | |
// 1. Create a component reference from the component | |
const componentRef = this.componentFactoryResolver | |
.resolveComponentFactory(component) | |
.create(this.injector); | |
// 2. Attach component to the appRef so that it's inside the ng component tree | |
this.appRef.attachView(componentRef.hostView); | |
// 3. Get DOM element from component | |
const domElem = (componentRef.hostView as EmbeddedViewRef<any>) | |
.rootNodes[0] as HTMLElement; | |
// 4. Append DOM element to the body | |
document.body.appendChild(domElem); | |
// 5. Wait some time and remove it from the component tree and from the DOM | |
setTimeout(() => { | |
this.appRef.detachView(componentRef.hostView); | |
componentRef.destroy(); | |
}, 3000); | |
} |
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