Javascript detect if links are external

[Guest]

So I've been using

window.onload = function(){  var anchors = document.getElementsByTagName('a');  for (var i=0; i<anchors.length; i++){    anchors[i].setAttribute('target', '_blank');  }}

To set all links to target _blank so that they open in a new tab, but I realized right before I commited it that it will do that for stuff like links to articles on my site which I don't want. Could someone help me out by modifying this to only add _target blank to external urls (distinguished by "http://" or "htpps://")?

 

[Guest]

Well ditching that whole idea, is there any way to just make target blank if the link is external?

[Mr_KoKa]

Just check if link has http if it does then check if its address isn't location.host, if it isn't it's external link, and change its target to _blank as you did, all looping through all a elements on page.