JS解析XML (childNodes.length问题)

Firefox是3(不正确), IE是1(正确)
我的问题是：怎么让Firefox 也是1呢?
======================<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
    <meta http-equiv="Content-Language" content="zh-cn"/>
    <title>xml</title>
</head><body>
<script type="text/javascript">
    function createDocument() {
        if (window.ActiveXObject) {
            var aVersions = [
                "MSXML2.DOMDocument.6.0",
                "MSXML2.DOMDocument.3.0",
                "Microsoft.XmlDom"
            ];            for (var i = 0; i < aVersions.length; i++) {
                try {
                    var oXmlDom = new ActiveXObject(aVersions[i]);
                    return oXmlDom;
                } catch (oError) {
                    //Do nothing
                }
            }
            throw new Error("MSXML is not installed.");
        } else if (document.implementation && document.implementation.createDocument) {
            Document.prototype.readyState = 0;
            Document.prototype.onreadystatechange = null;            Document.prototype._changeReadyState = function(iReady) {
                this.readyState = iReady;
                if (typeof this.onreadystatechange == "function") {
                    this.onreadystatechange();
                }
            };            Document.prototype._load = Document.prototype.load;
            Document.prototype.load = function(sURL) {
                this._changeReadyState(1);
                this.load(sURL);
            };
            var oXmlDom = document.implementation.createDocument("", "", null);
            oXmlDom.addEventListener("load", function() {
                this._changeReadyState(4);
            }, false);
            return oXmlDom;
        } else {
            throw new Error("Your browser doesn't support an XML DOM object.");
        }
    }//end createDocument    var oXmlDom = createDocument();
    oXmlDom.onreadystatechange = function () {
        if (oXmlDom.readyState == 4) {
            var oRoot = oXmlDom.documentElement;
            //IE显示1
            //Firefox显示3
            //怎么让它俩一致呢？
            alert(oRoot.childNodes.length);
        }
    };
    //oXmlDom.validateOnParse = false;
    oXmlDom.load("country.xml");
</script>
</body>
</html>======================================
country.xml<?xml version='1.0' encoding='utf-8'?>
<root>
    <country id="1" pid="0">中国
        <municipality id="2" pid="1">北京</municipality>
        <municipality id="3" pid="1">上海</municipality>
        <province id="4" pid="1">辽宁
            <city id="5" pid="4">沈阳</city>
            <city id="6" pid="4">大连</city>
        </province>
        <municipality id="7" pid="1">天津</municipality>
    </country>
</root>

解决方案 »

  1.   

    好像是IE忽略了TextNode，Firefox把两个回车处理成了TextNode。
    要不就遍历所有结点看nodeType是多少来区分TextNode，要不就是用getElementsByTagName来找到想要的结点，然后访问length
      

  2.   


    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
            "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
        <meta http-equiv="Content-Language" content="zh-cn"/>
        <title>xml</title>
    </head><body>
    <script type="text/javascript">
        function createDocument() {
            if (window.ActiveXObject) {
                var aVersions = [
                    "MSXML2.DOMDocument.6.0",
                    "MSXML2.DOMDocument.3.0",
                    "Microsoft.XmlDom"
                ];            for (var i = 0; i < aVersions.length; i++) {
                    try {
                        var oXmlDom = new ActiveXObject(aVersions[i]);
                        return oXmlDom;
                    } catch (oError) {
                        //Do nothing
                    }
                }
                throw new Error("MSXML is not installed.");
            } else if (document.implementation && document.implementation.createDocument) {
                Document.prototype.readyState = 0;
                Document.prototype.onreadystatechange = null;
                Document.prototype._changeReadyState = function(iReady) {
                    this.readyState = iReady;
                    if (typeof this.onreadystatechange == "function") {
                        this.onreadystatechange();
                    }
                };
                Document.prototype._load = Document.prototype.load;
                Document.prototype.load = function(sURL) {
                    this._changeReadyState(1);
                    this.load(sURL);
                };
                var oXmlDom = document.implementation.createDocument("", "", null);
                oXmlDom.addEventListener("load", function() {
                    this._changeReadyState(4);
                }, false);
                return oXmlDom;
            } else {
                throw new Error("Your browser doesn't support an XML DOM object.");
            }
        }//end createDocument    var oXmlDom = createDocument();
        oXmlDom.onreadystatechange = function () {
            if (oXmlDom.readyState == 4) {
                var oRoot = oXmlDom.documentElement;
    var oNodes = oRoot.childNodes;
    var n = 0;
    for(var i=0;i<oNodes.length;i++) if(oNodes[i].nodeType==1) n++;
                alert(n);
            }
        };
        //oXmlDom.validateOnParse = false;
        oXmlDom.load("country.xml");
    </script>
    </body>
    </html>