I believe your id value for the 'accountholderid' was looking for 'Id' instead of 'playerid'.
May I ask why you are calling 'eval' on the value? Do you need parseInt?
(function () {
var request = null;
function createRequest() {
try {
request = new XMLHttpRequest();
} catch (trymicrosoft) {
try {
request = new ActiveXObject('MsXML2.XMLHTTP');
} catch (othermicrosoft) {
try {
request = new ActiveXObject('Microsoft.XMLHTTP');
} catch (failed) {
request = null;
}
}
}
if (request === null) {
alert('Error creating request object!');
}
}
function getMessage() {
createRequest();
var accountholderid = document.getElementById('playerid').value,
id = eval(accountholderid),
url = 'http://localhost:8080/BankProjectApi/webresources/bankprojectapi.accountholder/' + id;
request.onreadystatechange = handleResponse;
request.open("GET", url, true);
request.send(null);
}
function handleResponse() {
if (request.readyState === 4 && request.status === 200) {
var xmlDocument = request.responseXML,
firstname = xmlDocument.getElementsByTagName('firstname'),
lastname = xmlDocument.getElementsByTagName('lastname'),
accountnumber = xmlDocument.getElementsByTagName('accountnumber');
for(var i = 0, max = firstname.length; i < max; i += 1) {
var firstname = firstname[i].childNodes[0].nodeValue,
lastname = lastname[i].childNodes[0].nodeValue,
accountnumber = accountnumber[i].childNodes[0].nodeValue;
document.getElementById('lastname').value = firstname;
document.getElementById('firstname').value = lastname;
document.getElementById('accountnumber').value = accountnumber;
}
}
}
}());
Also, I did a quick refactoring of your code to aid in my assessing the issue, adhere to more community conventions as well as avoid common JS pitfalls. (ex. closure, missing var declarations, ===, curlys everywhere, single variable pattern, and some others).