前端JS处理XML文件：从读取到转换的完整方案

/**
* 获取xml文件数据
* @param path 文件路径
* @return DOM格式数据
*/
function loadXML(path) {
  let xmlhttp;
  if (window.XMLHttpRequest){
    xmlhttp=new XMLHttpRequest();
  } else{
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
  xmlhttp.open("GET",path,false);
  xmlhttp.send();
  return xmlhttp.responseXML;
}

/**
* 获取xml文件数据
* @param path 文件路径
* @return 字符串格式数据
*/
function loadXMLDoc(path) {
  let xmlhttp;
  if (window.XMLHttpRequest){
    xmlhttp=new XMLHttpRequest();
  } else{
    xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
  xmlhttp.open("GET",path,false);
  xmlhttp.send();
  // xml的document
  const xmlDoc = xmlhttp.responseXML;
  // 转为字符串形式的xml
  var str = new XMLSerializer().serializeToString(xmlDoc)
  return str;
}

// 导入插件
<script src="js/xml2json.js"></script>
let xmlStr= "<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
    <name>x2js</name>
    <comment></comment>
    <projects>
    </projects>
    <buildSpec>
    </buildSpec>
    <natures>
    </natures>
</projectDescription>
"
// 将xml字符串数据转成json格式
let data = x2js.xml_str2json(xmlStr)
// json格式转成字符串
let str = x2js.json2xml_str(data)

  function loadXMLDoc(dname) {
        if (window.XMLHttpRequest) {
            xhttp=new XMLHttpRequest();
        }
        else {
            xhttp=new ActiveXObject("Microsoft.XMLHTTP");
        }
        xhttp.open("GET",dname,false);
        xhttp.send();
        return xhttp.responseXML;
    }
    var xmlDoc = loadXMLDoc("test.xml");
    var x2js = new X2JS();
    var jsonObj = x2js.xml2json(xmlDoc);