Open all external links in a new window

The following line of jQuery will add the relavant target="_blank" attribute to links on the page. It's best to scope it to a particular class or ID; in this case .content. The code is adapted from one posted on CSS Tricks but makes use of jQuery's :not() expression. You can also use the same filter selector in your CSS file to style external links differently.

Adding the attribute to every link when the page loads is not particularly performant. A better solution is to only check whether the link is external or not when it's clicked; that way the javascript can be deferred until it is actually needed. The use of the jQuery .on() function also means that there need only be one event handler - on the .content element instead of on every anchor.

This method is used on the page you're on now. Inspect the code to your heart's content.