Angular2 - SEO - how to manipulate the meta description
Search Results in google are displayed via TitleTag and the <meta name="description"..."/> Tag.
The <title>-Tag is editiable via Angular2 how to change page title in angular2 router
What's left is the description.
Is it possibile to write a directive in angular2, that manipulates the meta-tags in the <head> part of my page.
So depending on the selected route, the meta description changes like:
<meta name="description" content="**my description for this route**"/>
Answer
Since Angular4, you can use Angular Meta service.
import { Meta } from '@angular/platform-browser';
// [...]
constructor(private meta: Meta) {}
// [...]
this.meta.addTag({ name: 'robots', content: 'noindex' });