自学教程(runoops.com)

<html>

<head>
    <meta charset="utf-8" />
    <title>自学教程(runoops.com)</title>
</head>

<body>

<p id="demo"></p>

<script>
        var xhttp = new XMLHttpRequest();
        xhttp.onreadystatechange = function () {
            if (this.readyState == 4 && this.status == 200) {
                myFunction(this);
            }
        };
        xhttp.open("GET", "//demo.runoops.com/sources/xml/note_error.xml", true);
        xhttp.send();

function myFunction(xml) {
            var parser, xmlDoc;
            parser = new DOMParser();
            xmlDoc = parser.parseFromString(xml.responseText, "text/xml");
            document.getElementById("demo").innerHTML =
                myLoop(xmlDoc.documentElement);
        }

function myLoop(x) {
            var i, y, xLen, txt;
            txt = "";
            x = x.childNodes;
            xLen = x.length;
            for (i = 0; i < xLen; i++) {
                y = x[i];
                if (y.nodeType != 3) {
                    if (y.childNodes[0] != undefined) {
                        txt += myLoop(y);
                    }
                } else {
                    txt += y.nodeValue + "<br>";
                }
            }
            return txt;
        }
    </script>

</body>

</html>