Return disclaimer on external links (with href exception)

Question

I have some jQuery code to check all links on the site and return a disclaimer if it is an external link. Works fine. I do NOT want the disclaimer to appear for any embedded youtube videos on the site. I want to alter the code so this happens. So, if link does NOT contain youtube.com, then execute.

This is the original working code:

$(document).ready(function(){		
		
		$('a').filter(function() {	

   		return this.hostname && this.hostname !== location.hostname;

 		})

 		.click(function () { 

 		var x=window.confirm("You are now leaving our website. Click OK to proceed or cancel to stay on this page."); 

		var val = false;
		if (x)
			val = true;
		else
			val = false;
		return val;

        });			
			
});

I'd like to insert the code below code that defines if link is NOT youtube, but I don't know where to put it in the original code. I am new to jQuery. Thank you for any help.

if $('a').not('[href^="//www.youtube"], [href^="https://www.youtube"]');

Answer 1

Just chain the .not() after your .filter(). Also you've got a lot of redundant code in the click confirmation, so I cleaned that up too:

$(document).ready(function(){       
    $('a').filter(function() {  
        return this.hostname && this.hostname !== location.hostname;
    }).not('[href^="//www.youtube"], [href^="https://www.youtube"]').click(function () { 
        return confirm("You are now leaving our website. Click OK to proceed or cancel to stay on this page."); 
    });                 
});