How to pass variable to href in javascript?

Question

How to pass this variable value here? Below code is not working. And all other discussions on Stackoverflow are unclear.

Answer 1

You have to make some correction in your function..

function check()
    {
        var dist = document.getElementById('value').value;  //for input text value
       if (dist!==""){  //  for comparision
           window.location.href="district.php?dist="+dist;
       }
       else
           alert('Oops.!!');
    }