BlogJava-zhip-随笔分类-Ajaxhttp://www.blogjava.net/zhip/category/15497.htmlzh-cnFri, 02 Mar 2007 09:37:27 GMTFri, 02 Mar 2007 09:37:27 GMT60Ajax实现三级联动下拉框http://www.blogjava.net/zhip/archive/2006/09/20/70877.htmlzhipzhipWed, 20 Sep 2006 10:18:00 GMThttp://www.blogjava.net/zhip/archive/2006/09/20/70877.htmlhttp://www.blogjava.net/zhip/comments/70877.htmlhttp://www.blogjava.net/zhip/archive/2006/09/20/70877.html#Feedback0http://www.blogjava.net/zhip/comments/commentRss/70877.htmlhttp://www.blogjava.net/zhip/services/trackbacks/70877.html 
 var name1;
 function send_request(url,display,next,s) {//初始化、指定处理函数、发送请求的函数
        var current = s.options[s.selectedIndex].value;
   if ("" == current) return;
  var url1="selectValue="+current+"&name="+display+"&next="+next;
  http_request = false;
    name1=display;
  
  //开始初始化XMLHttpRequest对象
  if(window.XMLHttpRequest) { //Mozilla 浏览器
   http_request = new XMLHttpRequest();
   if (http_request.overrideMimeType) {//设置MiME类别
    http_request.overrideMimeType('text/html');
   }
  }
  else if (window.ActiveXObject) { // IE浏览器
   try {
    http_request = new ActiveXObject("Msxml2.XMLHTTP");
   } catch (e) {
    try {
     http_request = new ActiveXObject("Microsoft.XMLHTTP");
    } catch (e) {}
   }
  }
  if (!http_request) { // 异常，创建对象实例失败
   window.alert("不能创建XMLHttpRequest对象实例.");
   return false;
  }
  
  http_request.onreadystatechange = processRequest;
  // 确定发送请求的方式和URL以及是否同步执行下段代码
  
  http_request.open("post", url);
  
  
  http_request.setRequestHeader("Content-type","application/x-www-form-urlencoded");
  
  http_request.send(url1);
 }
 // 处理返回信息的函数
    function processRequest() {
        if (http_request.readyState == 4) { // 判断对象状态
            if (http_request.status == 200) { // 信息已经成功返回，开始处理信息
          
               document.getElementById(name1).innerHTML = http_request.responseText;
    
            } else { //页面不正常
                alert("您所请求的页面有异常。");
            }
        }
    }


zhip 2006-09-20 18:18 发表评论
]]>