XML encoding in JavaScript

As far as I know there is no cross browser way to generate valid XML documents, so it seems like string concatenation is the way to go. So here’s a little function to do the required encoding of characters that need to be specially encoded for XML. As ever, I’ve not done any kind of thorough testing on this…

    function XmlEncode(text) {
      text = text.replace(/&/g, '&');
      text = text.replace(/\"/g, '"');
      text = text.replace(/\'/g, ''');
      text = text.replace(/</g, '&lt;');
      text = text.replace(/>/g, '&gt;');
      return text;
    }