ajax应用

  <DIV class=box id=top_bar>Web Tools--Ajax Version </DIV><BR>

  <DIV class="box general">    天气预报: <INPUT id=Weather size=17

  value=北京>   <INPUT onclick=getWeather() type=button value="提 交" name=submit>   <SPAN

  id=Disp_Weather></SPAN></DIV>

  <DIV class="box general">  IP地址查询: <INPUT id=Ip maxLength=17 size=17

  value=127.0.0.1>   <INPUT onclick=getIp() type=button value="提 交" name=submit>   <SPAN

  id=Disp_IPArea></SPAN></DIV>

  <DIV class="box general">手机归属查询: <INPUT id=Mobile maxLength=15 size=17 value=13>

  <INPUT onclick=getMobile() type=button value="提 交">   <SPAN

  id=Disp_MobileArea></SPAN></DIV>

  <SCRIPT language=JavaScript type=text/javascript>

  chgBtnStyle();

  </SCRIPT>

  //针对不同的浏览器获取指定的id对象

  function getObj(objID) {

  return document.all ? document.all[objID] : document.getElementById(objID);

  }

  var req;

  //使用xmlrequest对象

  function createXHR() {

  try {

  req = new ActiveXObject("Msxml2.XMLHTTP");

  }

  catch (e) {

  try {

  req = new ActiveXObject("Microsoft.XMLHTTP");

  }

  catch (E) {

  req = false;

  }

  }

  if (!req && typeof XMLHttpRequest != "undefined") {

  req = new XMLHttpRequest();

  }

  }

  function getWeather() {

  createXHR();

  req.open("GET", "weather.asp?City=" + getObj("Weather").value, true);

  req.send();

  req.onreadystatechange = handleStateChange1;

  }

  function handleStateChange1() {

  if (req.readyState<4){getObj("Disp_Weather").innerText = "正在查询["+getObj("Weather").value+"]天气状况..."}

  else if (req.readyState == 4 && req.status == 200) {

  getObj("Disp_Weather").innerText = req.responseText;

  } else {

  getObj("Disp_Weather").innerText = "\u67e5\u8be2\u8fc7\u7a0b\u51fa\u73b0\u8fc7\u7a0b\uff0c\u8bf7\u91cd\u8bd5\u6216\u8054\u7cfb\u7ba1\u7406\u5458\uff01";

  }

  }

  function checkip() {

  var ipArray, ip, j;

  ip = getObj("Ip").value;

  if (/[^\d\.]/.test(ip)) {

  return false;

  }

  ipArray = ip.split(".");

  if (ipArray.length != 4) {

  return false;

  }

  for (var i = 0; i < 4; i++) {

  if (ipArray[i].length == 0 || ipArray[i] > 255) {

  return false;

  }

  }

  return true;

  }

  function getIp() {

  if (checkip()) {

  createXHR();

  req.open("GET", "IpSearch.asp?IP=" + getObj("Ip").value, true);

  req.send();

  req.onreadystatechange = handleStateChange;

  } else {

  getObj("Disp_IPArea").innerText = "\u8fd4\u56de\u9519\u8bef\uff1a\u4e0d\u662f\u6b63\u786e\u7684ip";

  }

  }

  function handleStateChange() {

  if (req.readyState<4){getObj("Disp_IPArea").innerText = "正在查询ip["+getObj("Ip").value+"]..."}

  else if (req.readyState == 4 && req.status == 200) {

  getObj("Disp_IPArea").innerText = req.responseText;

  } else {

  getObj("Disp_IPArea").innerText = "\u67e5\u8be2\u8fc7\u7a0b\u51fa\u73b0\u9519\u8bef\uff0c\u8bf7\u91cd\u8bd5\u6216\u8054\u7cfb\u7ba1\u7406\u5458\uff01";

  }

  }

  function checkMobile() {

  var sMobile = getObj("Mobile").value;

  if (!(/^13[0-9]\d{4,8}$/.test(sMobile))) {

  return false;

  }

  return true;

  }

  function getMobile() {

  if (checkMobile()) {

  createXHR();

  req.open("GET", "MobileSearch.asp?Mobile=" + getObj("Mobile").value, true);

  req.send();

  req.onreadystatechange = handleStateChange2;

  } else {

  getObj("Disp_MobileArea").innerText = "\u8fd4\u56de\u9519\u8bef\uff1a\u4e0d\u662f\u5b8c\u6574\u768411\u4f4d\u624b\u673a\u53f7\u6216\u8005\u6b63\u786e\u7684\u624b\u673a\u53f7\u524d\u4e03\u4f4d";

  }

  }

  function handleStateChange2() {

  if (req.readyState<4){getObj("Disp_MobileArea").innerText = "正在查询手机号码["+getObj("Mobile").value+"]..."}

  else if (req.readyState == 4 && req.status == 200) {

  getObj("Disp_MobileArea").innerText = req.responseText;

  } else {

  getObj("Disp_MobileArea").innerText = "\u67e5\u8be2\u8fc7\u7a0b\u51fa\u73b0\u9519\u8bef\uff0c\u8bf7\u91cd\u8bd5\u6216\u8054\u7cfb\u7ba1\u7406\u5458\uff01";

  }

  }

  function chgBtnStyle(){

  var btn=document.getElementsByTagName("input")

  for(var i=0;i<btn.length;i++){

  if(btn[i].type=='button'){

  btn[i].className="btnStyle";

  }

  }

  }