var createUrl = function(collection, uuid){
    return 'https://online.moysklad.ru/exchange/rest/ms/xml/' +
    collection + '/list/?filter=uuid%3D' + uuid;
}

var enumerate = function(xml){
  result = {};
  $.each($(xml)[0].attributes, function(i, attr){
    result[attr.name] = attr.value;
  });
  $.each($(xml)[0].childNodes, function(i, node){
    result[node.tagName] = node.textContent;
  });
  return result;
}

var enumerateCompany = function (rootName, result) {
    return $.extend({},
    enumerate($(rootName, result)),
    enumerate($(rootName + ' requisite', result)),
    enumerate($(rootName + ' bankAccount', result))
  )
}

var uuid = location.hash.replace(/^.+id=/, '');
var contractUrl = createUrl('Contract', uuid)
$.get(contractUrl, function(result){
  var contract = enumerate($('contract', result));
    $.get(createUrl('Company', contract.agentUuid), function(result){
        var contragent = enumerateCompany($('company', result));
        $.get(createUrl('MyCompany', contract.ownCompanyUuid), function(result){
        var myCompany = enumerateCompany('myCompany', result);
            console.log(contract, contragent, myCompany);
      })
  });
});