Can anyone tell me if it's possible to make a custom url field open up in a new window when inserting the field?
Or is that done through the theme?
I've looked at some of the advanced options of the url field in MetaBox and I saw the Custom HTML5 Attributes option where I can insert a key and value. So, I tried key=target and value = _blank (and "_blank"), but, neither worked.
I'm using GeneratePress and I can easily insert the custom field and I can prepend text, but, I don't see any option to open the field in a new window.