js操作XML

改变文本节点得值 xmlDoc = loadXMLDoc("books.xml");x = xmlDoc .getElementsByTagName("title")[0].childNodes[0];x.nodeValue="Easy Cooking";改变属性的值xmlDoc = loadXMLDoc("books.xml");x = xmlDoc .getElementsByTagName("book");x[0].setAttribute("category","food");删除元素节点xmlDoc = loadXMLDoc("books.xml");y = xmlDoc.getElementsByTagName("books")[0];xmlDoc.documentElement.removeChild(y);删除自身xmlDoc = loadXMLDoc("books.xml");x = xmlDoc.getElementsByTagName("book")[0];x.parentNode.removeChild(x);删除文本节点xmlDoc = loadXMLDoc("books.xml");x = xmlDoc.getElementsByTagName("title")[0];y = x.childNodes[0];x.removeChild(y);清空文本节点xmlDoc = loadXMLDoc("books.xml");x = xmlDoc.getElementsByTagName("title")[0];x.nodeValue = ""；根据名称删除属性节点xmlDoc = loadXMLDoc("books.xml");x = xmlDoc.getElementsByTagName("book");x[0].removeAttribute(category);根据对象删除属性节点xmlDoc = loadXMLDoc("books.xml");x = xmlDoc.getElementsByTagName("book");for(var i=0;i<x.length;i++){       while(x[i].attributes.length>0){                attnode=x[i].attributes[0];                old_att=x[i].removeAttribtueNode(attnode);       }}x[0].removeAttribute(category);替换元素节点replaceChild() 方法用于替换节点。xmlDoc = loadXMLDoc("books.xml");x = xmlDoc.documentElement;//create a book element, title element and a text nodenewNode = xmlDoc.createElement("book");newTitle = xmlDoc.createElement("title");newText = xmlDoc.createTextNode("A Notebook");//add the text node to the title node,newTitle.appendChild(newText);//add the title node to the book nodenewNode.appendChild(newTitle);y = xmlDoc.getElementsByTagName("book")[0];//replace the first book node with the new nodex.replaceChild(newNode,y);替换文本节点中的数据replaceData()方法用于替换文本节点中的数据。replaceData()方法有三个参数：offset-在何处开始替换字符。Offset值以0开始。length-要替换多少字符。string-要插入的字符串。xmlDoc = loadXMLDoc("books.xml");x = xmlDoc.getElementsByTagName("title")[0].childNodes[0];x.replaceDate(0,8,"Easy");用nodeValue属性来替换文本节点中的数据。xmlDoc = loadXMLDoc("books.xml");x = xmlDoc.getElementsByTagName("title")[0].childNodes[0];x.nodeValue="Easy Italian";创建新的元素节点createElement()方法创建新的元素节点。xmlDoc = loadXMLDoc("books.xml");newNode = xmlDoc.createElement("edition");x = xmlDoc.getElementsByTagName("book")[0];x.appendChild(newNode);创建新的属性节点xmlDoc = loadXMLDoc("books.xml");newAtt = xmlDoc.createAttribute("edition");newAtt.nodeValue ="first";x = xmlDoc.getElementsByTagName("title");x[0].setAttributeNode(newAtt);通过setAttribute创建属性。xmlDoc = loadXMLDoc("books.xml");x = xmlDoc.getElementsByTagName("book");x[0].setAttribute("edition","first");创建文本节点createTextNode()方法创建新的文本节点。xmlDoc = loadXMLDoc("books.xml");newNode = xmlDoc.createElement("publisher");newText = xmlDoc.createTextNode("english");newNode.appendChild(newText);x = xmlDoc.getElementsByTagName("book")[0];x.appendChild(newNode);创建一个CDATA Section节点