#JavaScript formatXML will format an xml string with line feeds (pretty printer)

app.js

/*
Format a XML string - pretty printer (with line feeds)
*/
function formatXml(xml) {
  var formatted = '';
  var reg = /(>)(<)(\/*)/g;
  xml = xml.replace(reg, '$1\r\n$2$3');
  var pad = 0;

  jQuery.each(xml.split('\r\n'), function(index, node) {
    var indent = 0;
    if (node.match( /.+<\/\w[^>]*>$/ )) {
      indent = 0;
    } else if (node.match( /^<\/\w/ )) {
      if (pad != 0) {
        pad -= 1;
      }
    } else if (node.match( /^<\w[^>]*[^\/]>.*$/ )) {
      indent = 1;
    } else {
      indent = 0;
    }

    var padding = '';
    for (var i = 0; i < pad; i++) {
      padding += '  ';
    }

    formatted += padding + node + '\r\n';
    pad += indent;
  });

  return formatted;
}