Use window.open(). It's pretty straightforward !
window.open()
In your component.html file-
component.html
<a (click)="goToLink("www.example.com")">page link</a>
In your component.ts file-
component.ts
goToLink(url: string){ window.open(url, "_blank");}
just use the full url as href like this:
<a href="https://www.example.com/" target="_blank">page link</a>
<a [routerLink]="" (click)="openSite(SiteUrl)">{{SiteUrl}}</a>
and in your Component.ts
openSite(siteUrl) { window.open("//" + siteUrl, '_blank');}