js遍历xml

// XML字符串
const xmlString = `
<library>
  <book id="1">
    <title>JavaScript: The Good Parts</title>
    <author>Douglas Crockford</author>
  </book>
  <book id="2">
    <title>Eloquent JavaScript</title>
    <author>Marijn Haverbeke</author>
  </book>
</library>
`;

// 解析XML字符串
const parser = new DOMParser();
const xmlDoc = parser.parseFromString(xmlString, "application/xml");

// 遍历book元素
const books = xmlDoc.getElementsByTagName("book");
for (let i = 0; i < books.length; i++) {
  const book = books[i];
  const id = book.getAttribute("id");
  const title = book.getElementsByTagName("title")[0].childNodes[0].nodeValue;
  const author = book.getElementsByTagName("author")[0].childNodes[0].nodeValue;
  console.log(`Book ID: ${id}, Title: ${title}, Author: ${author}`);
}

// 假设有一个返回XML数据的URL
const url = "https://example.com/library.xml";

fetch(url)
  .then(response => response.text())
  .then(str => (new window.DOMParser()).parseFromString(str, "application/xml"))
  .then(xmlDoc => {
    const books = xmlDoc.getElementsByTagName("book");
    for (let i = 0; i < books.length; i++) {
      const book = books[i];
      const id = book.getAttribute("id");
      const title = book.getElementsByTagName("title")[0].childNodes[0].nodeValue;
      const author = book.getElementsByTagName("author")[0].childNodes[0].nodeValue;
      console.log(`Book ID: ${id}, Title: ${title}, Author: ${author}`);
    }
  })
  .catch(error => console.error('Error fetching XML:', error));