Angular variable into routerLink

There you go.

<a [routerLink]="['/details', data.id]"> Link </a>

Parameters go as second item in the array syntax to router link, like this:

[routerLink]="['/details', data.id]

Read more here

Similar to above, but you can also do this:

<a [routerLink]="['/details' + data.id]"> Link </a>