title: how to insert multiple checkbox value in the url
body: <p>I have a form that contain a multiple checkbox 
  i want to insert the values of checkbox into the url like this</p>
  
  <pre><code>var a=encodeURIComponent(document.getElementById("idofcheckbox").value)
  xmlhttp.open("GET","InsertPHPData.php?q="+a+,true); xmlhttp.send();
  </code></pre>
  
  
  Choix1 <br>
  choix2 <br>