How to include an & in a URL from Jquery plugins

How to include an & in a URL from Jquery plugins

We have an external link in our code wherein when we click on the link it will redirect us to a different url where the URL has two "?" embed into it. Now the client wants only one "?" and needs one "&" instead of that ?.

Now URL which we are getting is: www.adcb.com/xxx.jsp?10.10.10.10?redirect=www.abcdefgh.com
      we have two "?" included in the URL, for the one ? which is before redirect should be made as &

Expected url is: www.adcb.com/xxx.jsp?10.10.10.10 & redirect=www.abcdefgh.com