We can user Rendered2 in browser version of Angular app but it requires document.body reference and it's not available on server rendering.
platform-browser has Title and Meta components but I would like to have more control over <head> section, like injecting <script> tags, accessing body element, etc.
Is there a way to do it?
Maxim Koretskyi
Actually, Angular Universal uses DOMINO library under the hood, which creates document in the same way as browser does. The only difference is that you have to inject DOCUMENT like this:
import { DOCUMENT } from '@angular/common';
import { Component, Inject, Renderer2 } from '@angular/core';
@Component({ ... })
export class AppComponent {
constructor(@Inject(DOCUMENT) document, r: Renderer2) {
r.addClass(document.body, 'myclass');
}
}
来源：https://stackoverflow.com/questions/48346873/how-to-add-class-to-body-in-angular-universal