How to read and parse (local) XML-file in Prototype JS?

Question

I have to create a module in a specific project, which already uses PrototypeJS.

What I have: - An XML File with information

What I want: - A simple div, which displays the (with XPath filterd) Content of the XML-File.

I am complete new to PrototypeJS and dont know where to begin, so I appreciate your help.

Blessing chris

Answer 1

If by "local" you mean "client-side", you will have to :

• include a file input for the user to upload the xml file to your server
• fetch the xml file by ajax (easiest way) to have it as an xml document in your javascript
• parse the xml file with the dedicated API
• build an HTML representation of the content using text, images, etc. and include it in your div.

edit: to clarify the fetch part, here is how you can do it using Prototype:

new Ajax.Request('myfile.xml', {
  onSuccess: function(transport) {
    myParseXml(transport.responseXML);
  },
  onFailure: function(transport) {
    alert('Failure! Status code '+transport.status+' ('+transport.statusText+')');
  }
);

function myParseXml(xmlDoc) {
  var root = xmlDoc.documentElement;
  ...
}