怎樣使用JavaScript操作XML數據据

来源：互联网发布：变速齿轮源码编辑：程序博客网时间：2024/05/16 01:03

//加载文档
//doc.load("b.xml");

//创建文件头
var p = doc.createProcessingInstruction("xml","version='1.0' encoding='gb2312'");

//添加文件头
doc.appendChild(p);

//用于直接加载时获得根接点
//var root = doc.documentElement;

//两种方式创建根接点
// var root = doc.createElement("students");
var root = doc.createNode(1,"students","");

//创建子接点
var n = doc.createNode(1,"ttyp","");

//指定子接点文本
//n.text = " this is a test";

//创建孙接点
var o = doc.createElement("sex");
o.text = "男"; //指定其文本

//创建属性
var r = doc.createAttribute("id");
r.value="test";

//添加属性
n.setAttributeNode(r);

//创建第二个属性
var r1 = doc.createAttribute("class");
r1.value="tt";

//添加属性
n.setAttributeNode(r1);

//删除第二个属性
n.removeAttribute("class");

//添加孙接点
n.appendChild(o);

//添加文本接点
n.appendChild(doc.createTextNode("this is a text node."));

//添加注释
n.appendChild(doc.createComment("this is a comment/n"));

//添加子接点
root.appendChild(n);

//复制接点
var m = n.cloneNode(true);

root.appendChild(m);

//删除接点
root.removeChild(root.childNodes(0));

//创建数据段
var c = doc.createCDATASection("this is a cdata");
c.text = "hi,cdata";
//添加数据段
root.appendChild(c);

//添加根接点
doc.appendChild(root);

//查找接点
var a = doc.getElementsByTagName("ttyp");
//var a = doc.selectNodes("//ttyp");

//显示改接点的属性
for(var i= 0;i<a.length;i++)
{
alert(a[i].xml);
for(var j=0;j<a[i].attributes.length;j++)
{
alert(a[i].attributes[j].name);
}
}

//XML保存（需要在服务端，客户端用FSO）
//doc.save();

//查看根接点XML
if(n)
{
alert(n.ownerDocument.xml);
}

//-->
</script>

实例1：利用xml数据岛分页.htm
************************************************
<xml id="users">
<userGroup>
<user>
<userid>user 1</userid>
<name>name 1</name>
</user>
<user>
<userid>user 2</userid>
<name>name 2</name>
</user>
<user>
<userid>user 3</userid>
<name>name 3</name>
</user>
<user>
<userid>user 4</userid>
<name>name 4</name>
</user>
<user>
<userid>user 5</userid>
<name>name 5</name>
</user>
<user>
<userid>user 6</userid>
<name>name 7</name>
</user>
<user>
<userid>user 7</userid>
<name>name 7</name>
</user>
<user>
<userid>user 8</userid>
<name>name 8</name>
</user>
<user>
<userid>user 9</userid>
<name>name 9</name>
</user>
</userGroup>
</xml>
<table id="datatable" datasrc="#users" DATAPAGESIZE="3" width="400" border="1">
<tr>
<td><span datafld="userid"></span></td>
<td><span datafld="name"></span></td>
</tr>
</table>
<button onclick="document.all.datatable.previousPage()">Previous Page</button>
<button onclick="document.all.datatable.nextPage()">Next Page</button>
************************************************

实例2：xml数据岛实例1.htm
************************************************
<HTML>
<HEAD><Title>HTML中的数据岛中的记录集</Title></HEAD>
<body bkcolor=#EEEEEE text=blue bgcolor="#00FFFF">
<Table align=center width="100%"><TR><TD align="center">
<h5><b><font size="4" color="#FF0000">HTML中的XML数据岛记录编辑与添加</font></b></h5>
</TD></TR></Table>
<HR>
酒店名称：<input type=text datasrc=#theXMLisland DataFLD=NAME size="76"><BR>
　　地址：<input type=text datasrc=#theXMLisland DataFLD=Address size="76"><BR>
　　主页：<input type=text datasrc=#theXMLisland DataFLD=HomePage size="76"><BR>
电子邮件：<input type=text datasrc=#theXMLisland DataFLD=E-Mail size="76"><BR>
　　电话：<input type=text datasrc=#theXMLisland DataFLD=TelePhone size="76"><BR>
　　级别：<input type=text datasrc=#theXMLisland DataFLD=Grade size="76"><HR>
<input id="first" TYPE=button value="<<　第一条记录" onclick="theXMLisland.recordset.moveFirst()">
<input id="prev" TYPE=button value="<上一条记录" onclick="theXMLisland.recordset.movePrevious()">
<input id="next" TYPE=button value="下一条记录>" onclick="theXMLisland.recordset.moveNext()">
<input id="last" TYPE=button value="最后一条记录>>" onclick="theXMLisland.recordset.moveLast()"> 
<input id="Add" TYPE=button value="添加新记录" onclick="theXMLisland.recordset.addNew()">

<XML ID="theXMLisland">
<HotelList>
<Hotel>
<Name>四海大酒店</Name>
<Address>海魂路1号</Address>
<HomePage>www.sihaohotel.com.cn</HomePage>
<E-Mail>master@sihaohotel.com.cn</E-Mail>
<TelePhone>(0989)8888888</TelePhone>
<Grade>五星级</Grade>
</Hotel>
<Hotel>
<Name>五湖宾馆</Name>
<Address>东平路99号</Address>
<HomePage>www.wuhu.com.cn</HomePage>
<E-Mail>web@wuhu.com.cn</E-Mail>
<TelePhone>(0979)1111666</TelePhone>
<Grade>四星级</Grade>
</Hotel>
<Hotel>
<Name>“大沙漠”宾馆</Name>
<Address>留香路168号</Address>
<HomePage>www.dashamohotel.com.cn</HomePage>
<E-Mail>master@dashamohotel.com.cn</E-Mail>
<TelePhone>(0989)87878788</TelePhone>
<Grade>五星级</Grade>
</Hotel>
<Hotel>
<Name>“画眉鸟”大酒店</Name>
<Address>血海飘香路2号</Address>
<HomePage>www.throstlehotel.com.cn</HomePage>
<E-Mail>chuliuxiang@throstlehotel.com.cn</E-Mail>
<TelePhone>(099)9886666</TelePhone>
<Grade>五星级</Grade>
</Hotel>
</HotelList>
</XML>
</body>
</HTML>
************************************************

实例3：XML连动表单.htm
************************************************

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>无标题文档</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script language="javascript1.2">
function ChooseState()
{
var source;
var sourceName = "Citys.xml";
var source = new ActiveXObject('Microsoft.XMLDOM'); //创建一个MSXML解析器实例
source.async = false;
source.load(sourceName); //装入XML文档
root = source.documentElement; //设置文档元素为根节点元素
sortField=root.selectNodes("//@name"); //搜索属性中含有name的所有节点
for(var i=0;i<sortField.length;++i) //增加省份名称到下拉列表
{
var oOption = document.createElement('OPTION');
oOption.text = " "+sortField[i].text+" ";
oOption.value = sortField[i].text;
form1.SelState.options.add(oOption);
}
ChooseCity();
}

//自定义函数：ChooseCity
//(根据当前选定的省名来读取XML数据中的对应城市名称，并增加到SelCity的下拉列表中)
function ChooseCity()
{
x=form1.SelState.selectedIndex; //读取省份下拉框的当前选项
y=form1.SelState.options[x].value;
sortField=root.selectNodes("//State[@name='"+y+"']/City"); //搜索name属性值等于参数y的State节点下的所有city节点
for(var i=form1.SelCity.options.length-1;i>=0;--i) //撤消原来的列表项
{
form1.SelCity.options.remove(i)
}
for(var i=0;i<sortField.length;++i) //增加城市名称到下拉列表
{
var oOption = document.createElement('OPTION');
oOption.text = " "+sortField[i].text+" ";
oOption.value = sortField[i].text;
form1.SelCity.options.add(oOption);
}
}
</script>
</head>

附 Citys.xml
<?xml version="1.0" encoding="gb2312"?>
<China>
<State id="1" name="江西">
<City>九江</City>
<City>南昌</City>
<City>庐山</City>
<City>景德镇</City>
</State>
<State id="2" name="北京">
<City>北京西</City>
<City>居庸关</City>
<City>清华园</City>
<City>周口店</City>
</State>
<State id="3" name="福建">
<City>福州</City>
<City>厦门</City>
<City>漳州</City>
</State>
<State id="4" name="甘肃">
<City>兰州</City>
<City>洛门</City>
<City>嘉峪关</City>
</State>
<State id="5" name="广东">
<City>广州</City>
<City>深圳</City>
<City>东莞</City>
<City>石牌</City>
</State>
<State id="6" name="安徽">
<City>合肥</City>
<City>黄山</City>
<City>九龙岗</City>
<City>马鞍山</City>
</State>
</China>