title: How to handle Querystring in JavaScript?
body: <p>I have a js code:</p>
  
  <pre><code>    window.onload = function() {
          document.getElementById("Button1").onclick = function() {
              var t1 = document.getElementById("Text1").value;
              var t2 = document.getElementById("Text2").value;
  
              document.URL = 'myurl?t1=' + t1 + '&amp;t2' + t2;
           }
      }
  </code></pre>
  
  <p>Here i am adding t1,t2 as query param..now my question is lets say i have entered some data in Textbox1 but not in textbox2, in that case the url I am getting is 
  <code>'myurl?t1=' + value of textbox1 + '&amp;t2' + This will be blank;</code>
  I want to make it dynamic, i.e.if there is not value in Textbox2 then I dont want to append queryparam t2, same goes for t1 also..isit possible?</p>