Accessing `selector` from within an Angular 2 component

Question

I\'m trying to figure out how I can access the selector that we pass into the @Component decorator.

For example

@Componen         


        

Answer 1

Use ElementRef:

import { Component, ElementRef } from '@angular/core'

@Component({
  selector: 'my-component'
})
export class MyComponent {
  constructor(elem: ElementRef) {
    const tagName = elem.nativeElement.tagName.toLowerCase();
  }
}

Answer 2

OUTDATED See https://stackoverflow.com/a/42579760/227299

You need to get the metadata associated with your component:

Important Note Annotations get stripped out when you run the AOT compiler rendering this solution invalid if you are pre compiling templates

@Component({
  selector: 'my-component'
})
class MyComponent {
  constructor() {
    // Access `MyComponent` without relying on its name
    var annotations = Reflect.getMetadata('annotations', this.constructor);
    var componentMetadata = annotations.find(annotation => {
      return (annotation instanceof ComponentMetadata);
    });
    var selector = componentMetadata.selector // my-component
  }
}