I'm now making a web crawler.

getting a link from HTML is easy part but acquiring a link from the result of javascript is not easy for me.

Can I get the result of javascript so as to know where a link is referred to?

for example.

How can I retrieve the link to google.com from javascript code in Python?

```
<!DOCTYPE html>
<html lang="en">
    <head></head>
    <body>
        <a href="#" id="goog">to google</a>
    </body>
    <script>
        document.getElementById('goog').onclick = function() {
            window.location = "http://google.com";
        };

    </script>
</html>

```