Ask HN: What is this 'hacker' trying to do?

I've recently being getting strange requests in my error logs. For example:

'/Scripts/)j.html(e'

'/Scripts/);c(this.node).html(f.preloadText);c(this.node).appendTo('

'/Scripts/).html(parseInt('

'/Scripts/).html(g);$('

'/Scripts/).html(f);$('

I get probably about 20 of these requests in a minute and I can't think of what the person is trying to accomplish.

It's probably assuming that I'm parsing whatever string that comes after /Scripts/ directly and then hoping to ... ???

It's great when you pick these up in your logs but a little worrying when it stops. Just wondering if anyone recognise the 'test' suite that's generating these requests.