How to output HTML form data to a XML file using Javascript?

I'm currently trying to figure out how to output my HTML form data to an XML file. This is an idea I've been playing around with for the past couple of days in order to create a autounattended.xml file to be used with Windows 7 installations.

Currently my HTML is as follows:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" ".dtd">
<html>
    <head>
        <title>Windows 7 Answer File Generator</title>
    </head>
    <body>
        <form>
            <h1>Windows 7 Answer File Generator</h1>
            <h2>General Settings</h2>
            <table>
                <tr>
                    <td width="200px">Skip product key:</td>
                    <td>
                        <select name="SkipProductKey">
                            <option value="Yes" selected="selected">Yes</option>
                            <option value="No">No</option>
                        </select>
                    </td>
                </tr>
                <tr>
                    <td width="200px">Skip automatic activation:</td>
                    <td>
                        <select name="SkipAutoActivation">
                            <option value="Yes" selected="selected">Yes</option>
                            <option value="No">No</option>
                        </select>
                    </td>
                </tr>
            </table>
        </body>
    </html>

This is just a snippet of what I've been working on. So, I was wondering if its possible to use javascript to create an XML file based on the select values and ask the user where to save the xml file. Any information regarding this would be a big help.

Currently my HTML is as follows:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3/TR/html4/loose.dtd">
<html>
    <head>
        <title>Windows 7 Answer File Generator</title>
    </head>
    <body>
        <form>
            <h1>Windows 7 Answer File Generator</h1>
            <h2>General Settings</h2>
            <table>
                <tr>
                    <td width="200px">Skip product key:</td>
                    <td>
                        <select name="SkipProductKey">
                            <option value="Yes" selected="selected">Yes</option>
                            <option value="No">No</option>
                        </select>
                    </td>
                </tr>
                <tr>
                    <td width="200px">Skip automatic activation:</td>
                    <td>
                        <select name="SkipAutoActivation">
                            <option value="Yes" selected="selected">Yes</option>
                            <option value="No">No</option>
                        </select>
                    </td>
                </tr>
            </table>
        </body>
    </html>

Share Improve this question edited Jul 8, 2012 at 12:52 Sllix 6069 silver badges29 bronze badges asked Jul 8, 2012 at 12:41 Chris 1372 gold badges5 silver badges12 bronze badges

1 I want to mention, you are not closing your form tag. – Sllix Commented Jul 8, 2012 at 12:48
In order to save the file, you will need some kind of script that receives the content and has access to your filesystem. The browser (for very good reasons) has no direct access to the filesystem. – danp Commented Jul 8, 2012 at 12:54
You would need to serialize the data as XML on the server and send it to the client with appropriate headers for them to download. – rlemon Commented Jul 8, 2012 at 13:29
@Slixx, Im now aware of this. I only copied and pasted a section of my html and that section didnt include the end form tag – Chris Commented Jul 8, 2012 at 13:56
@rlemon; is there any way to do this with a client side script? – Chris Commented Jul 8, 2012 at 13:57

| Show 2 more ments

1 Answer 1

Sorted by: Reset to default 5

Demo here

$(function () {
  $('#DownloadButton').click(update);
});

var template = [
  '<?xml version="1.0"?>',
  '<unattend xmlns="urn:schemas-microsoft-:unattend">',
  '...',
  '<SkipProductKey><?SkipProductKey?></SkipProductKey>',
  '...',
  '<SkipAutoActivation><?SkipAutoActivation?></SkipAutoActivation>',
  '...',
  '</unattend>'
].join('\r\n');

function update() {
  var variables = {
    'SkipProductKey': $('#SkipProductKey').val(),
    'SkipAutoActivation': $('#SkipAutoActivation').val()
  };

  var newXml = template.replace(/<\?(\w+)\?>/g,
    function(match, name) {
      return variables[name];
    });


  $('#ResultXml').val(newXml);
  $('#DownloadLink')
    .attr('href', 'data:text/xml;base64,' + btoa(newXml))
    .attr('download', 'autounattended.xml');
  $('#generated').show();
}

if (!window.btoa) {
  // Source: http://www.koders./javascript/fid78168FE1380F7420FB7B7CD8BAEAE58929523C17.aspx
  btoa = function (input) {
    var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';

    var result = '';
    var chr1, chr2, chr3;
    var enc1, enc2, enc3, enc4;
    var i = 0;

    do {
      chr1 = input.charCodeAt(i++);
      chr2 = input.charCodeAt(i++);
      chr3 = input.charCodeAt(i++);

      enc1 = chr1 >> 2;
      enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
      enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
      enc4 = chr3 & 63;

      if (isNaN(chr2)) {
        enc3 = enc4 = 64;
      } else if (isNaN(chr3)) {
        enc4 = 64;
      }

      result += chars.charAt(enc1) + chars.charAt(enc2) + chars.charAt(enc3) + chars.charAt(enc4);
    } while (i < input.length);

    return result;
  };
}

Edit:

Added the download-button as requested from OP.
Added the download-attribute to the link to show the Save As-dialog when clicked. (Thanks Saurabh)
Demo updated.

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How to output HTML form data to a XML file using Javascript? - Stack Overflow

1 Answer 1

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