Copying Text From Website, Attaches Link With Text Copied?

Sorry for the title not really sure how to explain it being that I don't fully understand how it works. I'm not a veteran coder so sorry if I should already know this. When I copy

Solution 1:

Check its body listener, which has a 'oncopy' event listener

document.body.oncopy = function() {
    // replace the origin copy text
}

Solution 2:

They are using this JS service: http://www.tynt.com/

It basically catches the selection event and attaches some more (hidden) data to the selection.