js 更新xml文件内容

// 假设我们有一个名为 example.xml 的文件
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>
`;

// 创建一个 DOMParser 实例来解析 XML 字符串
const parser = new DOMParser();
const xmlDoc = parser.parseFromString(xmlString, "application/xml");

// 获取要更新的节点
const bookToUpdate = xmlDoc.querySelector('book[id="1"] title');

// 更新节点内容
if (bookToUpdate) {
  bookToUpdate.textContent = "JavaScript: The Definitive Guide";
}

// 将更新后的 XML 转换回字符串
const serializer = new XMLSerializer();
const updatedXmlString = serializer.serializeToString(xmlDoc);

console.log(updatedXmlString);

const xmlDoc = parser.parseFromString(xmlString, "application/xml");
if (xmlDoc.querySelector("parsererror")) {
  console.error("XML parsing error:", xmlDoc.querySelector("parsererror").textContent);
} else {
  // 继续处理 XML 文档
}