How to write query string in javascript?

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ASP.NET

Javascript

Hi,
I have a javascript function in that function i want to write a query string and i want to pass the three values and by using that three values i have to filter the grid in another page
the javascript function i used here is

function OnSubjectClientSeriesClicked(sender, eventArgs)
      {
          try
          {
              var data = eventArgs.get_Category();
              var res = data.split(",");
            var str = "http://localhost/Reports.aspx?name=res[0]&CourseId=res[1]&SectionId=res[3]"
          }
          catch (e)
          {

          }

      }

can any one help me?