Redirect to url passing variables

Hi, i need to redirect form to another url and i will use:

on_sent_ok: “location = ‘https://example.com/’;”

I need to know how can i pass variable of my field.
I need to pass for example name=alex and last_name=test and from datapicker date_arrive=7+Nov+2014

So the url belive on_sent_ok: “location = ‘https://example.com?name=alex+last_name=test+date_arrive=7+Nov+2014’;”

How can i make it?

Thanks a lot

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