Get Query String variables in JavaScript

Get Query String variables in JavaScript
Use Java Script to get access to the query string

<script>
    function getQueryVariable(variable) 
    {
         var query = window.location.search.substring(1);
         var vars = query.split("&");
         for (var i=0;i<vars.length;i++) 
        {
             var pair = vars[i].split("=");
             if (pair[0] == variable) 
             {
                 return pair[1];
             }
         }
         alert('Query Variable ' + variable + ' not found');
    }
</script>

Now make a request to page.html?x=Hello

    <script>
            alert( getQueryVariable("x") );
     </script>