XMLHttpRequest对象创建数据请求处理

// 输出数据
// title: 输出数据的标题
// states: 输出数据来源
********************************************************/
function outputList(title,states)
{
    var out = title;
    var currentState = null;   // 初始化省份对象
    for (var i = 0; i < states.length; i++)   // 列出Ststes对象的所有数据,生成输出串
    {
        currentState = states[i];   // 取得当前的省份
        //   生成输出HTML字符串
        out = out + "<ul><font face='仿宋_GB2312'><span style='font-size: 9pt'>";
        out = out + "<li>" + currentState.childNodes[0].nodeValue + "</li>";
        out = out + "</span></font></ul>";
    }
    // 取得输出串的对象,输出生成的字符串
    var test = document.getElementById("test");
    test.innerHTML = out;
}

5、完整示例文件

<!DOCTYPE html PUBLIC "-//W3C//DTD XHML 1.0 Strict//EN" "http://www.w3.org/TR/xHML/DTD/xhtml-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<head>
<meta http-equiv="Content-Type" CONTENT="text/html; charset=gb2312">
<meta http-equiv="Cache-Control" CONTENT="no-cache">
<meta http-equiv="Pragma" CONTENT="no-cache">
<meta http-equiv="Expires" CONTENT="0">

<title>AJAX 测试</title>
<script type="text/javascript">
///// 创建XMLHttpRequest对象
var xhr;
var requestType = "";

//xhr = new XMLHttpRequest();

function createXMLHttpRequest()
{
    if (window.ActiveXObject)
    {
        xhr = new ActiveXObject("Microsoft.XMLHTTP");
    }
    else if (window.XMLHttpRequest)
    {
        xhr = new XMLHttpRequest();
    }
}
///// ＸＭＬ文档处理
function startRequest(requestedList)
{
    if (xhr)
    {
        requestType = requestedList;
        createXMLHttpRequest();
        xhr.onreadystatechange = handleStateChange;
        xhr.open("GET","../ajax/paraseXML.xml",true);
        xhr.send(null);
    }
    else
        alert("XMLHTTPREQUEST IS FALSE");
}

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function handleStateChange()
{
    if (xhr.readyState == 4)
    {
        if (xhr.status == 200)
        {
            if (requestType == "north")
            {
                listNorthStates();
        &n

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