QML Javascript getElementsByTagName中的解析器XML错误

为什么在QML中无法从tag=IMIE到nameTextField.text获取值

我的职能

function load()
{
    var xmlDoc;
    var xhr = new XMLHttpRequest();
    xhr.onreadystatechange = function() {
        if (xhr.readyState === XMLHttpRequest.HEADERS_RECEIVED) {
            //console.log('HEADERS_RECEIVED')
        } else if(xhr.readyState === XMLHttpRequest.DONE) {
            xmlDoc=xhr.responseXML;

    //error
                    nameTextField.text = xmlDoc.getElementsByTagName("IMIE")[0].childNodes[0].nodeValue; // <- error: TypeError: Property 'getElementsByTagName' of object [object Object] is not a function
    //error

            }
        }
        //xhr.open("GET", "");
        //xhr.send();
    }

---

我在报告的错误中发现了这一点，但如何解决此问题？

请链接到报告的错误。

function load()
{
    var xmlDoc;
    var xhr = new XMLHttpRequest();
    xhr.onreadystatechange = function() {
        if (xhr.readyState === XMLHttpRequest.HEADERS_RECEIVED) {
            //console.log('HEADERS_RECEIVED')
        } else if(xhr.readyState === XMLHttpRequest.DONE) {
            xmlDoc=xhr.responseXML;

    //error
                    nameTextField.text = xmlDoc.getElementsByTagName("IMIE")[0].childNodes[0].nodeValue; // <- error: TypeError: Property 'getElementsByTagName' of object [object Object] is not a function
    //error

            }
        }
        //xhr.open("GET", "");
        //xhr.send();
    }