XML 学习(三) DOM 解析- Node 对象的属性

XML 学习(三) DOM 解析- Node 对象的属性

下午在 W3C看了半天XML DOM 教程，弄了个例子，整理下；( W3C上有所有的网站建设教程，有一个对应的中文网站 http://www.w3school.com.cn/index.html，不过有些例子的连接打不开)
loadxmldoc.js，只有一个函数loadXMLDoc(dname)，单数为解析XML文件名，返回一个XMLDOM对象；

function loadXMLDoc(dname)
{
    var xmlDoc;
     //  code for IE
     if  (window.ActiveXObject)
    {
        xmlDoc = new  ActiveXObject( " Microsoft.XMLDOM " );
    }
     //  code for Mozilla, Firefox, Opera, etc.
     else   if  (document.implementation  &&  document.implementation.createDocument)
    {
        xmlDoc = document.implementation.createDocument( "" , "" , null );
    }
     else
    {
        alert( ' Your browser cannot handle this script ' );
    }
    xmlDoc.async = false ;
    xmlDoc.load(dname);
     return (xmlDoc);
}

book.xml待解析XML文件

<? xml version = " 1.0 "  encoding = " ISO-8859-1 "   ?>  
<!--   Edited with XML Spy v2007 (http: // www.altova.com) --> 
< bookstore >
   < book category = " COOKING " >
   < title lang = " en " > Everyday Italian </ title >  
   < author > Giada De Laurentiis </ author >  
   < year > 2005 </ year >  
   < price > 30.00 </ price >  
   </ book >
   < book category = " CHILDREN " >
   < title lang = " en " > Harry Potter </ title >  
   < author > J K. Rowling </ author >  
   < year > 2005 </ year >  
   < price > 29.99 </ price >  
   </ book >
   < book category = " WEB " >
   < title lang = " en " > XQuery Kick Start </ title >  
   < author > James McGovern </ author >  
   < author > Per Bothner </ author >  
   < author > Kurt Cagle </ author >  
   < author > James Linn </ author >  
   < author > Vaidyanathan Nagarajan </ author >  
   < year > 2003 </ year >  
   < price > 49.99 </ price >  
   </ book >
   < book category = " WEB " >
   < title lang = " en " > Learning XML </ title >  
   < author > Erik T. Ray </ author >  
   < year > 2003 </ year >  
   < price > 39.95 </ price >  
   </ book >
</ bookstore >

book.html  测试页面

< html >
     < head >
         < script src = " ../loadxmldoc.js " ></ script >
         < script >
             var  xmlDoc  =  loadXMLDoc( " book.xml " );
             function  getFirstChild(doc){
                      var  x  =  doc.firstChild;
                      while (x.nodeType != 1 ){
                             x.nextSibling;
                     }
                      return  x;
             }
              function  getLastChild(doc){
                      var  x  =  doc.lastChild;
                      while (x.nodeType != 1 ){
                             x.previousSibling;
                     }
                      return  x;
             }
             
             var  first  =  getFirstChild(xmlDoc.documentElement);
            document.write( " first.nodeName: "   +  first.nodeName);
            document.write( " first.nodeType: "   +  first.nodeType  +   " <br/><br/> " );

             var  last  =  getLastChild(xmlDoc.documentElement);
            document.write( " last.nodeName: "   +  last.nodeName);
            document.write( " last.nodeType: "   +  last.nodeType  +   " <br/><br/> " );

             var  test  =  xmlDoc.getElementsByTagName( " title " );
             var  parent  =  test.item( 0 ).parentNode;
            document.write( " parent.nodeName: "   +  parent.nodeName  +   " <br/><br/> " );
            document.write( " textContent: "   +  parent.textContent  +   " <br/><br/> " );
            document.write( " text: "   +  parent.text  +   " <br/><br/> " );
            document.write( " xml: "   +   " <xmp> "   +  parent.xml  +   " </xmp> "   +   " <br/><br/> " );
                        
            document.write(xmlDoc.nodeName);
            document.write(xmlDoc.nodeType  +   "    " );
            document.write(xmlDoc.childNodes[ 0 ].nodeValue  +   " <br/> " );            
             var  x  =  xmlDoc.documentElement; // 获得xml文件文档元素，即bookstore
            document.write(x.nodeName);
            document.write(x.nodeType  +   "    " );
            document.write(x.childNodes.item( 0 ).nodeValue  +   " <br/> " );            
             var  child  =  x.childNodes; // 获得 bookstore所有的子元素 book
             // 显示bookstore所有元素
             for (i = 0 ; i <  child.length; i ++ ){                
                document.write(child[i].nodeName);
                document.write(child[i].nodeType  +   "    " );    
                document.write(child[i].childNodes[ 0 ].nodeValue  +   " <br/> " );
                 var  ch  =  child[i];
                 for (j = 0 ; j < ch.childNodes.length; j ++ ){
                    document.write(ch.childNodes[j].nodeName);
                    document.write(ch.childNodes[j].nodeType  +   "    " );                        
                    document.write(ch.childNodes[j].childNodes[ 0 ].nodeValue  +   " <br/> " );
                }
            }            
         </ script >
     </ head >
</ html >

其中用到的XML DOM - Node 对象的属性有：
childNodes:返回某节点到子节点的节点列表
firstChild:返回某节点的首个子节点
lastChild:返回某个节点的最后一个子节点
nextSibling:返回某个节点之后紧跟的同级节点
nodeName:返回节点的名称，根据其类型
nodeType:返回节点的类型
nodeValue:设置或返回某个节点的值，根据其类型
ownerDocument:返回某个节点的根元素（document 对象）
parentNode:返回某节点的父节点
previousSibling:返回某个节点之前紧跟的同级节点
textContent:设置或返回某节点及其后代的文本内容
text:返回某节点及其后代的文本（IE 独有的属性）
xml:返回某节点及其后代的 XML（IE 独有的属性）

未测试或者不太明白的XML DOM - Node 对象的属性有，谁帮忙讲解下啊；
baseURI:返回某个节点的绝对基准
prefix:设置或返回某节点的命名空间前缀
localName:返回某个节点的本地名称
namespaceURI:返回某个节点的命名空间