How to refresh a page with jQuery by passing a parameter to URL

Question

I am refreshing my page using jQuery:

location.reload();

This is working great but I want to refresh the same page by passing a parameter t

Answer 1

var singleText = "single";
var s = window.location.search;

if (s.indexOf(singleText) == -1) {
    window.location.href += (s.substring(0,1) == "?") ? "&" : "?" + singleText;
}