For openSUSE Leap 42.1 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:containers:Portus:Release:2.0.3/openSUSE_Leap_42.1/Virtualization:containers:Portus:Release:2.0.3.repo
zypper refresh
zypper install nodejs
For openSUSE 13.2 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Virtualization:containers:Portus:Release:2.0.3/openSUSE_13.2/Virtualization:containers:Portus:Release:2.0.3.repo
zypper refresh
zypper install nodejs