Question

I want to create a regex that parse only links that complies to the current domain. I want to know if there is something like {hostname} that I can use inside a Javascript regex object so it will lock the search only to those links that are for the current page specific domain.

For example: if the domain is http://www.domain.com, it will search links only links that start with that specific domain. if the domain is anotherdomain.com, it will search only links that start with that specific domain. My regex is more complex, but I would like to be able to put some kind of global variable that will be replaced with the current domain.

Answer 1

You can retrieve the hostname of the current page via the Location object :

var hostname = window.location.hostname;

And then you can compose your regex using that variable by concatenating it into your regex :

var re = new RegExp("<start of your regex>" + hostname + "<end of your regex>");