외부 라이브러리를 사용하지 않고 JavaScript에서 XML 데이터를 어떻게 구문 분석할 수 있습니까?

<address>
  <street>Roble Ave</street>
  <mtfcc>S1400</mtfcc>
  <streetNumber>649</streetNumber>
  <lat>37.45127</lat>
  <lng>-122.18032</lng>
  <distance>0.04</distance>
  <postalcode>94025</postalcode>
  <placename>Menlo Park</placename>
  <adminCode2>081</adminCode2>
  <adminName2>San Mateo</adminName2>
  <adminCode1>CA</adminCode1>
  <adminName1>California</adminName1>
  <countryCode>US</countryCode>
</address>

// Create a new DOM parser
var parser = new DOMParser();

// Parse the XML string into a DOM object
var xmlDoc = parser.parseFromString(txt, "text/xml");

// Get the street number
var streetNumber = xmlDoc.getElementsByTagName("streetNumber")[0].childNodes[0].nodeValue;

// Get the street name
var street = xmlDoc.getElementsByTagName("street")[0].childNodes[0].nodeValue;

// Get the postal code
var postalcode = xmlDoc.getElementsByTagName("postalcode")[0].childNodes[0].nodeValue;