How do I save HTML form data to an XML file using JavaScript? -


i making blog in users can leave comments on posts. used javascript read data xml file , display in div element. however, can't page save new comments xml file, , rewrite div contents based on changed xml file. know how edit xml file, how save it? (sorry, code's little messy)

source code:

index.html:

<!doctype html>  <html lang = "en-us">  <head>  <title>blog</title>      <script src = "loadxml.js">      </script>      <script>          function addcomment1(form)          {          var xmldoc = loadxmldoc("one.xml");          var use = form.user1.value;          var com = form.comment1.value;          }      </script>      <meta charset = "utf-8"/>  </head>  <body>      <h1>posts</h1>      <br/>      <!-- post -->     <h2>comments:</h2>      <div>          <p>              <script>                  var xmldoc = loadxmldoc("one.xml");                 var cap = xmldoc.getelementsbytagname("content");                  (i = 0; < cap.length; ++)                  {                      document.writeln(xmldoc.getelementsbytagname("user")[i].firstchild.nodevalue + ":<br/>");          document.writeln(xmldoc.getelementsbytagname("content")[i].firstchild.nodevalue + "<br/><hr/>");                   }              </script>          </p>          <form name = "form1">              <input type = "text" name = "user1"/>          <input type = "text" name = "comment1" />              <input type = "submit" value = "submit" onclick = "addcomment1(this.form)"/>          </form>      </div>  </body>  </html>

one.xml:

<?xml version="1.0" encoding="utf-8"?>  <comment>          <user>gabe rust</user>          <content>hello world!</content>  </comment>

loadxml.js:

function loadxmldoc(filename)  {  if (window.xmlhttprequest)  {          xhttp=new xmlhttprequest();  }  else // code ie5 , ie6      {          xhttp=new activexobject("microsoft.xmlhttp");  }  xhttp.open("get",filename,false);      xhttp.send();  return xhttp.responsexml;  }    function loadxmlstring(txt)  {      if (window.domparser)  {  parser=new domparser();  xmldoc=parser.parsefromstring(txt,"text/xml");  }  else // code ie      {  xmldoc=new activexobject("microsoft.xmldom");          xmldoc.async=false;  xmldoc.loadxml(txt);  }       return xmldoc;  }


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