建立XMLHttpRequest对象

分类：js_jQuery答疑 - 常见问题 · 发布时间：2021-11-12 16:48 · 阅读：3814

utl.js

function createXmlTree(node, indent) { 

    if (node == null) 
        return ""; 
    var str = ""; 

    switch (node.nodeType) { 
        case 1:    // Element 
            str += "<" + node.nodeName + ""; 

            var attrs = node.attributes; 
            for (var i = 0; i < attrs.length; i++) 
                str += createXmlAttribute(attrs[i]); 

            if (!node.hasChildNodes()) 
                return str + "/>

";

            str += ">";

            var cs = node.childNodes;
            for (var i = 0; i < cs.length; i++)
                str += createXmlTree(cs[i], indent + 3);

            str += "" + node.nodeName + "

";
            break;

        case 9:    // Document
            var cs = node.childNodes;
            for (var i = 0; i < cs.length; i++)
                str += createXmlTree(cs[i], indent);
            break;

        case 3:    // Text
            if (!/^\s*$/.test(node.nodeValue))
                str += "" + node.nodeValue + "";
            break;

        case 7:    // ProcessInstruction
            str += "
            var attrs = node.attributes;
            for (var i = 0; i < attrs.length; i++)
                str += createXmlAttribute(attrs[i]);

            str+= "?>"
            break;

        case 4:    // CDATA
            str = "" +
                node.nodeValue +
            "]" + "]>

";
            break;

        case 8:    // Comment
            str = "

";
            break;

        case 10:
                str = "                if (node.publicId) {
                    str += " PUBLIC \"" + node.publicId + "\"";
                    if (node.systemId)
                        str += " \"" + node.systemId + "\"";
                }
                else if (node.systemId) {
                    str += " SYSTEM \"" + node.systemId + "\"";
                }
                str += ">";

                // TODO: Handle custom DOCTYPE declarations (ELEMENT, ATTRIBUTE, ENTITY)

                break;

        default:
            //alert(node.nodeType + "\n" + node.nodeValue);
            inspect(node);
    }

    return str;
}

function inspect(obj) {
    var str = "";
    for (var k in obj)
        str += "obj." + k + " = " + obj[k] + "\n";
    window.alert(str);
}

function createXmlAttribute(a) {
    return " " + a.nodeName + "=\"" + a.nodeValue + "\"";
}

复制代码代码如下:

Ajax test

rel=stylesheet>

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建立XMLHttpRequest对象

0133技术栈

建立XMLHttpRequest对象

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