Load a web page, execute its JavaScript and dump resulting HTML to a file

I need to load a web page, execute its JavaScript (and all js files included with the tags) and dump resulting HTLM to a file. This needs to be done on the server. I have tried node.js with zombie.js but it seems it is too immature to work in the real world. More often than not it just throws a bogus exception while a real browser (FireFox) has no issues with the page.

My node.js code is:

var zombie = require("zombie"),
    sys = require('sy开发者_StackOverflow社区s');

// Load the page
var browser = new zombie.Browser({ debug: false });
browser.visit('http://www.dba.dk', function (error, browser, status) {
    if (error) { console.log('Error:' + error.message); }
    if (!error && browser.statusCode == 200) {
        sys.puts(browser.html);
    }
});

and it exits with an exception "TypeError: Cannot call method 'toString' of null"

Jaxer is not really an option.. I need to download a 3rd party page and execute it on my server. How would I do that with Jaxer

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Perhaps that’s because you are using err.message whereas err is not defined? error, on the other hand, is defined.

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Update

Did you check out PhantomJS?

Also, it looks like Aptana Jaxer could do what you want. To quote John Resig:

Imagine ripping off the visual rendering part of Firefox and replacing it with a hook to Apache instead - roughly speaking that's what Jaxer is.