js解析xml，不跨域

从w3c看到的例子，自己测试了一下。ok。

js解析xml，暂时没有找到可以跨域的办法。跨域的话，只能通过后台去写。

javascript

<script type="text/javascript">
        var xmlhttp;

        function loadXMLDoc(url) {
            xmlhttp = null;
            if (window.XMLHttpRequest) {// code for IE7, Firefox, Mozilla, etc.
                xmlhttp = new XMLHttpRequest();
            }
            else if (window.ActiveXObject) {// code for IE5, IE6
                xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
            }
            if (xmlhttp != null) {
                xmlhttp.onreadystatechange = onResponse;
                xmlhttp.open("GET", url, true);
                xmlhttp.send(null);
            }
            else {
                alert("Your browser does not support XMLHTTP.");
            }
        }

        function onResponse() {
            if (xmlhttp.readyState != 4) return;
            if (xmlhttp.status != 200) {
                alert("Problem retrieving XML data");
                return;
            }

            txt = "<table border='1'>";
            x = xmlhttp.responseXML.documentElement.getElementsByTagName("item");

            for (i = 0; i < x.length; i++) {
                txt = txt + "<tr>";
                xx1 = x[i].getElementsByTagName("title");
                {
                    try {
                        txt = txt + "<td>" + xx1[0].firstChild.nodeValue + "</td>";
                    }
                    catch (er) {
                        txt = txt + "<td> </td>";
                    }
                }
                xx2 = x[i].getElementsByTagName("content");
                {
                    try {
                        txt = txt + "<td>" + xx2[0].firstChild.nodeValue + "</td>";
                    }
                    catch (er) {
                        txt = txt + "<td> </td>";
                    }
                }

                xx3 = x[i].getElementsByTagName("date");
                {
                    try {
                        txt = txt + "<td>" + xx3[0].firstChild.nodeValue + "</td>";
                    }
                    catch (er) {
                        txt = txt + "<td> </td>";
                    }
                }
                txt = txt + "</tr>";
            }
            txt = txt + "</table>";
            document.getElementById('showhtml').innerHTML = txt;
</script>

页面

<div id="showhtml">
        <button onclick="loadXMLDoc('1.xml')">Get xml information</button>
</div>

1.xml

<?xml version="1.0" encoding="GBK" ?>
<news>
<item>
<title>this is title</title>
<content>this is content</content>
<date>2013-12-10 13:50:44</date>
</item>
</news>