跨浏览器Javascript XML解析

Question

是否有任何跨浏览器/跨平台的方法来解析Javascript中的XML文件？

Answer 1

以下内容适用于所有主流浏览器,包括IE 6:

var parseXml;

if (typeof window.DOMParser != "undefined") {
    parseXml = function(xmlStr) {
        return ( new window.DOMParser() ).parseFromString(xmlStr, "text/xml");
    };
} else if (typeof window.ActiveXObject != "undefined" &&
       new window.ActiveXObject("Microsoft.XMLDOM")) {
    parseXml = function(xmlStr) {
        var xmlDoc = new window.ActiveXObject("Microsoft.XMLDOM");
        xmlDoc.async = "false";
        xmlDoc.loadXML(xmlStr);
        return xmlDoc;
    };
} else {
    throw new Error("No XML parser found");
}

用法示例:

var xml = parseXml("<foo>Stuff</foo>");
alert(xml.documentElement.nodeName);

现场演示:

var parseXml;

if (typeof window.DOMParser != "undefined") {
    parseXml = function(xmlStr) {
        return ( new window.DOMParser() ).parseFromString(xmlStr, "text/xml");
    };
} else if (typeof window.ActiveXObject != "undefined" &&
       new window.ActiveXObject("Microsoft.XMLDOM")) {
    parseXml = function(xmlStr) {
        var xmlDoc = new window.ActiveXObject("Microsoft.XMLDOM");
        xmlDoc.async = "false";
        xmlDoc.loadXML(xmlStr);
        return xmlDoc;
    };
} else {
    throw new Error("No XML parser found");
}

var xml = parseXml("<foo>Stuff</foo>");
document.body.innerHTML = "Root element: " + xml.documentElement.nodeName;

Answer 2

考虑使用jQuery.parseXML.

请注意,旧的JQuery代码(pre 2.x)与接受的答案中提出的代码基本相同,可以在http://code.jquery.com/jquery-1.9.1.js找到,部分版本如下:

// Cross-browser xml parsing
parseXML: function( data ) {
    ...
    try {
        if ( window.DOMParser ) { // Standard
            tmp = new DOMParser();
            xml = tmp.parseFromString( data , "text/xml" );
        } else { // IE
            xml = new ActiveXObject( "Microsoft.XMLDOM" );
            xml.async = "false";
            xml.loadXML( data );
        }
    } catch( e ) {
        xml = undefined;
    }
    ...
}

启动JQuery 2.x代码更改为跳过ActiveX分支,如果您仍然需要它 - 使用旧版本的JQuery或内联ActiveX解析.来自http://code.jquery.com/jquery-2.0.0.js的部分代码:

// Cross-browser xml parsing
parseXML: function( data ) {
    var xml, tmp;
    .....
    // Support: IE9
    try {
        tmp = new DOMParser();
        xml = tmp.parseFromString( data , "text/xml" );
    } catch ( e ) {
        xml = undefined;
    }
    .....
},