Use window.open but block use of window.opener

Pointing out that it's a comma separated list of features (no whitespaces), so you could set 'noopener,noreferrer,resizable' i.e.:

window.open('http://sensible.url', '_blank', 'noopener,noreferrer,resizable')

From Mozilla docs:

windowFeatures Optional

A DOMString containing a comma-separated list of window features given with their corresponding values in the form "name=value". [...]


Use

var yourWindow = window.open();
yourWindow.opener = null;
yourWindow.location = "http://someurl.here";

Credit goes to Mathias Bynens: https://mathiasbynens.github.io/rel-noopener/


The window.open() call now supports the feature "noopener".
So calling window.open('https://www.your.url','_blank','noopener') should open the new window/tab with a null window.opener.

I'm having trouble finding a reliable list of supporting browsers (and versions) - MDN states here that

This is supported in modern browsers including Chrome, and Firefox 52+.

From my experimentation, I see it works for:

  • Chrome 61
  • FireFox 56
  • Safari 11.1 (thanks Jiayi Hu for this)

But doesn't work for:

  • IE 11.608
  • Edge 40

(All tests on a PC running Windows 10...)

For backwards compatibility it may be better to combine this with t3__rry's answer.