title: get selected value of radio button onclick of submit and pass value to a function
body: <p>I am doing some work in PHP. I have two php page</p>
  
  <p>index.php</p>
  
  <pre><code>&lt;html&gt;
  &lt;head&gt;
  &lt;script&gt;
  function getVote(int)
  {
  if (window.XMLHttpRequest)
    {// code for IE7+, Firefox, Chrome, Opera, Safari
    xmlhttp=new XMLHttpRequest();
    }
  else
    {// code for IE6, IE5
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
    }
  xmlhttp.onreadystatechange=function()
    {
    if (xmlhttp.readyState==4 &amp;&amp; xmlhttp.status==200)
      {
      document.getElementById("poll").innerHTML=xmlhttp.responseText;
      }
    }
  xmlhttp.open("GET","poll-vote.php?vote="+int,true);
  xmlhttp.send();
  }
  &lt;/script&gt;
  &lt;/head&gt;
  &lt;body&gt;
  &lt;h3&gt;Is this correct? &lt;/h3&gt;
  &lt;div id="poll"&gt;
  
  &lt;form&gt;
  Yes:
  &lt;input type="radio" name="vote" value="0"&gt;
  &lt;br&gt;No:
  &lt;input type="radio" name="vote" value="1"&gt;
  &lt;input type="submit" value="Forward" onclick="getVote(value);"&gt; 
  &lt;/form&gt;
  &lt;/div&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>on click of submit button I need to get the value of selected radio button and pass it to the function.</p>
  
  <p>Please help me</p>