Convert XML to JSON and back using the classic xml2js convention: attributes become "@key" entries, mixed text becomes "#text", and repeated elements become JSON arrays. A single text-only child collapses to a plain string.
The parser handles comments, CDATA sections, entity references and processing instructions locally in your browser — no server round trip.
Frequently asked questions
Is the JSON → XML conversion lossless?
Round trips are lossless for elements, attributes and text. Namespace prefixes (like soap:) are kept verbatim as part of the tag name, not expanded.
What JSON converts to XML?
The root must be an object with exactly one key — it becomes the root element. Nested objects become child elements, arrays become repeated elements, and "@key" / "#text" entries become attributes / text.
中文说明
按经典的 xml2js 约定实现 XML 与 JSON 双向互转：属性映射为 "@键"、混排文本为 "#text"、重复元素合并为数组，纯文本子元素直接折叠为字符串。
解析器支持注释、CDATA 节、实体引用与处理指令，全部在浏览器本地完成，不经服务器。
常见问题
JSON 转 XML 是无损的吗？
元素、属性与文本往返无损。命名空间前缀（如 soap:）作为标签名的一部分原样保留，不做展开。
什么样的 JSON 能转 XML？
根必须是恰好一个键的对象——它就是根元素。嵌套对象变成子元素、数组变成重复元素，"@键" 与 "#text" 分别映射为属性与文本。