Answers for "Some simple code to do something with data from an XML document fetched over the network"

Some simple code to do something with data from an XML document fetched over the network

function processData(data) {
  // taking care of data
}

function handler() {
  if(this.status == 200 &&
    this.responseXML != null &&
    this.responseXML.getElementById('test').textContent) {
    // success!
    processData(this.responseXML.getElementById('test').textContent);
  } else {
    // something went wrong
    …
  }
}

var client = new XMLHttpRequest();
client.onload = handler;
client.open("GET", "unicorn.xml");
client.send();