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基于asp+ajax和数据库驱动的二级联动菜单

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Release: 2016-06-06 20:33:48
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基于asp+ajax和数据库驱动的二级联动菜单,需要的朋友可以参考下。

index.asp 页面代码
代码如下:

set cmd = conn.execute("select bigclassid,bigclassname from bigclass")
tempid=cmd("bigclassid")
%>


"
response.write html
end if
%>



ajax.js 代码
代码如下:
// JavaScript Document
function createxmlhttp()
{
xmlhttpobj = false;
try{
xmlhttpobj = new XMLHttpRequest;
}catch(e){
try{
xmlhttpobj=new ActiveXObject("MSXML2.XMLHTTP");
}catch(e2){
try{
xmlhttpobj=new ActiveXObject("Microsoft.XMLHTTP");
}catch(e3){
xmlhttpobj = false;
}
}
}
return xmlhttpobj;
}

function getsubcategory(bigclassid){
if(bigclassid==0){
document.getElementById("subclass").innerHTML="";
return;
};
var xmlhttpobj = createxmlhttp();
if(xmlhttpobj){//如果创建对象xmlhttpobj成功
xmlhttpobj.onreadystatechange=handle;
xmlhttpobj.open('get',"getsubcategory.asp?bigclassid="+bigclassid+"&number="+Math.random(),true);//get方法 加个随机数。


xmlhttpobj.send(null);
}
}

function handle(){//客户端监控函数
//if(xmlhttpobj.readystate==4){//服务器处理请求完成
if(xmlhttpobj.status==200){
//alert('ok');
var html = xmlhttpobj.responseText;//获得返回值
document.getElementById("subclass").innerHTML=html;
}else{
document.getElementById("subclass").innerHTML="对不起,您请求的页面有问题...";
}
/
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