javascript.js
var url="ajax.asp"; //后台地址
var time_delayajax=300; //搜索延迟
var time_delayupdown=100; //方向键延迟
obj_div.style.top = (xtop + 20) + "px"; //20差不多是输入框的高度,请根据实际情况调整
ajax_xmlhttp.send("sift_value="+escape(temp_value)); //提交到后台的值
dd=d+"li onmouseover=\"overli("+i+");\" onmousedown=\"downli("+i+")\" onmouseup=\"upli("+i+",event)\" onmousemove=\"moveli();\">span>约"+c[1]+"结果/span>"+c[0]+"/li>";//****li的显示

.ajaxsearch {
width:300px; //提示层的宽度
}

!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
html xmlns="http://www.w3.org/1999/xhtml">
head>
meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
link rel="stylesheet" type="text/css" href="default.css" />
script language="JavaScript" src="javascript.js" type="text/javascript">/script>
title>Google suggest高仿示例/title>
/head>
body onResize="removediv();">
div style="margin:20px 50px">
input style="width:298px;height:18px" type="text" autocomplete="off" onBlur="blurdeal();" onKeyDown="keydowndeal(event);" onFocus="focusdeal(event);" />
/div>
/body>
/html>

///////////////////////////////搜索提示框/////////////////////////////////
var obj_div; //提示层对象
var obj_input; //输入框对象
var main_delay; //判断值变化延迟对象
var ajax_delay; //ajax延迟搜索对象
var updown_delay; //方向键延迟对象
var ajax_xmlhttp; //ajax对象
var div_word=null; //当前提示层对应的搜索值
var li_num=-1; //伪光标位置,提示层被选中的li序号,从0开始
var li_down=-1; //鼠标按下提示层的序号
var value_ed=""; //输入框延迟前的值
var value_ing=""; //输入框当前的值
var value_unexit=""; //搜索过没有结果的值开头
var updown_run=false; //允许方向键上下
var ajax_run=false; //true为正常进程,false停止ajax
var ajax_run_ing=false; //true正在运行,false空闲
var input_focus=false; //文本框焦点
var url="ajax.asp"; //后台地址**********************************************************
var time_delayajax=300; //搜索延迟**********************************************************
var time_delayupdown=100; //方向键延迟********************************************************
var $=function(Fun_id){
return document.getElementById(Fun_id);
}
try{
ajax_xmlhttp= new ActiveXObject('Msxml2.XMLHTTP');
}catch(e){
try{
ajax_xmlhttp= new ActiveXObject('Microsoft.XMLHTTP');
}catch(e){
try{
ajax_xmlhttp= new XMLHttpRequest();
}catch(e){ajax_xmlhttp=null;}
}
}
////////////////////////创建提示层////////////////////////
function createajaxdiv(){
var create_div = document.createElement("div");
create_div.type = "div";
var promptdiv = document.body.appendChild(create_div);
promptdiv.className = "ajaxsearch";
obj_div=promptdiv;
}
////////////////////////设置提示层位置////////////////////////
function removediv(){
if(!obj_div || !obj_input)return false;
if(obj_div.style.display=="none")return false;
var obj=obj_input;
var xtop=0;
var xleft=0;
while(obj){
xtop += obj["offsetTop"];
xleft += obj["offsetLeft"];
obj = obj.offsetParent;
}
obj_div.style.left = xleft + "px";
obj_div.style.top = (xtop + 20) + "px"; //20差不多是输入框的高度,请根据实际情况调整************************************************************8
li_down=-1;
}
////////////////////////隐藏提示层////////////////////////
function hideajaxdiv(){
obj_div.style.display="none";
li_down=-1;
}
////////////////////////设置被选li>css样式////////////////////////
function setlistyle(){
for(var i=0;iobj_div.firstChild.childNodes.length;i++){
obj_div.firstChild.childNodes[i].id="";
}
if(li_num!=-1)obj_div.firstChild.childNodes[li_num].id="liseleted";
}
////////////////////////鼠标经过提示层////////////////////////
function overli(Fun_seletedlinum){
if(li_num==-1)value_ing=obj_input.value;
li_num=Fun_seletedlinum;
setlistyle();
}
////////////////////////鼠标拖动提示层////////////////////////
function moveli(){
if(window.getSelection){
setfocus();
window.getSelection().removeAllRanges();
}else{
document.selection.empty();
setfocus();
}
}
////////////////////////鼠标按下提示层////////////////////////
function downli(Fun_seletedlinum){
if(!obj_input)return false;
li_down=Fun_seletedlinum;
input_focus=true;
}
////////////////////////鼠标弹起提示层////////////////////////
function upli(Fun_seletedlinum,Fun_event){
if(!obj_input)return false;
if(Fun_event.button==2){li_down=-1;return}
if(li_down!=Fun_seletedlinum){
li_down=-1;
return false;
}
clearTimeout(ajax_delay);
clearTimeout(updown_delay);
updown_run=true;
ajax_run=false;
ajax_run_ing=false;
li_num=-1;
div_word=null;
value_ed=obj_div.firstChild.childNodes[Fun_seletedlinum].childNodes[1].nodeValue;
obj_input.value=value_ed;
value_ing=value_ed;
hideajaxdiv();
obj_div.innerHTML="";
}
////////////////////////设置文本框获取焦点///////////////////////
function setfocus(){
if(window.event){
var r = obj_input.createTextRange();
r.moveStart('character',obj_input.value.length);
r.collapse(true);
r.select();
}else{
obj_input.selectionStart=obj_input.value.length;
obj_input.focus();
}
}
////////////////////////文本框失去焦点////////////////////////
function blurdeal(){
if(input_focus==true){
setfocus();
setTimeout("setfocus()");
return false;
}
updown_run=false;
ajax_run=false;
ajax_run_ing=false;
clearInterval(main_delay);
clearTimeout(ajax_delay);
clearTimeout(updown_delay);
hideajaxdiv();
if(value_ed!=obj_input.value)obj_div.innerHTML="";
}
////////////////////////文本框获取焦点////////////////////////
function focusdeal(Fun_event){
if(!obj_div)createajaxdiv();
if(input_focus==true){
input_focus=false;
return false;
}
var obj=((window.event)?Fun_event.srcElement:Fun_event.target);
if(obj.type!="text")return false;
updown_run=true;
ajax_run=true;
ajax_run_ing=false;
if(obj_input==obj value_ed==obj.value obj_div.innerHTML!=""){
obj_div.style.display="block";
removediv();
}else{
obj_input=obj;
value_ed=obj.value;
value_ing=obj.value;
value_unexit="";
li_num=-1;
li_down=-1;
div_word=null;
obj_div.innerHTML="";
removediv();
}
main_delay=setInterval("mainajax()",10);
}
////////////////////////主函数////////////////////////
function mainajax(){
if(value_ed==obj_input.value)return false;
if(value_unexit!="" (obj_input.value).indexOf(value_unexit)==0){hideajaxdiv();obj_div.innerHTML="";return false;}
if(value_ed!=obj_input.value ajax_run_ing==false){
ajax_run=true;
value_ed=obj_input.value;
clearTimeout(ajax_delay);
if(obj_input.value!=""){
ajax_delay=setTimeout("getsearch();",time_delayajax);
}else{
hideajaxdiv();
obj_div.innerHTML="";
ajax_run=false;
return false;
}
}
}
////////////////////////获取搜索内容////////////////////////
function getsearch(){
var temp_value=obj_input.value;
if(ajax_xmlhttp==null){
return false;
}else if(ajax_xmlhttp.readyState!=0){
ajax_xmlhttp.abort();
ajax_run_ing=false;
}
ajax_xmlhttp.onreadystatechange=function(){
if(ajax_run==false){ajax_xmlhttp.abort();ajax_run_ing=false;return false;}
if(ajax_xmlhttp.readyState==4){
obj_div.innerHTML="";
if(ajax_xmlhttp.status==200 || ajax_xmlhttp.status==304){
var contant=ajax_xmlhttp.responseText;
if(contant!="" ajax_run==true){
div_word=temp_value;
obj_div.innerHTML=resetcontant(contant);
obj_div.style.display="block";
removediv();removediv();
}else{
hideajaxdiv();
}
updown_run=true;
ajax_run_ing=false;
li_num=-1;
if(contant=="")value_unexit=temp_value;
}
}
}
ajax_xmlhttp.open("post",url,true);
ajax_xmlhttp.setRequestHeader('Content-type','application/x-www-form-urlencoded');
ajax_run_ing=true;
ajax_xmlhttp.send("sift_value="+escape(temp_value)); //提交到后台的值*****************************************
}
////////////////////////内容重组///////////////////////
function resetcontant(Fun_contant){
if(Fun_contant==null || Fun_contant=="")return "";
var a=Fun_contant.substring(1,Fun_contant.length-1);
if(Fun_contant==null || Fun_contant=="")return "";
var b=a.split("''");
var c;
var d;
d="ul>";
for(var i in b){
c=b[i].split(",");
//***************************************************************
d=d+"li onmouseover=\"overli("+i+");\" onmousedown=\"downli("+i+")\" onmouseup=\"upli("+i+",event)\" onmousemove=\"moveli();\">span>约"+c[1]+"结果/span>"+c[0]+"/li>";
//***************************************************************
}
d=d+"li onmousedown=\"input_focus=true;li_down=-1;\" onmouseup=\"li_down=-1\" onmousemove=\"moveli();\">span>a class=\"shutajaxdiv\" onclick=\"hideajaxdiv();\">关闭/a>/span>/li>"
d=d+"/ul>";
return d;
}
////////////////////////键盘事件////////////////////////
function keydowndeal(Fun_event){
var keyc=((window.event)?Fun_event.keyCode:Fun_event.which);
if(keyc==13){hideajaxdiv();return false;}
if(keyc==27){
if(obj_div.style.display=="block" li_num>-1)value_ed=obj_input.value=value_ing;
hideajaxdiv();
return false;
}
if(keyc==40 || keyc==38){
if(div_word==obj_input.value obj_div.style.display=="none" obj_div.innerHTML!=""){
obj_div.style.display="block";
removediv();
return false;
}
if(li_num==-1){
if(div_word!=obj_input.value)return false;
}else{
if(div_word!=value_ing)return false;
}
if(updown_run==false || ajax_run_ing==true || obj_div.style.display=="none")return false;
updown_delay=setTimeout("updownli("+keyc+")",time_delayupdown);
updown_run=false;
}
}
////////////////////////方向键移动li////////////////////////
function updownli(Fun_key){
if(!obj_div){return false;}
updown_run=true;
if(li_num==-1){
if(div_word!=obj_input.value){hideajaxdiv();obj_div.innerHTML="";li_num=-1;return false;}
}else{
if(div_word!=value_ing){hideajaxdiv();obj_div.innerHTML="";li_num=-1;return false;}
}
if(updown_run==false)return false;
if(li_num==-1)value_ing=value_ed;
if(Fun_key==40){
if(li_numobj_div.firstChild.childNodes.length-2){
li_num++;
}else{
li_num=-1;
}
}
if(Fun_key==38){
if(li_num>=0){
li_num--;
}else{
li_num=obj_div.firstChild.childNodes.length-2;
}
}
if(li_num!=-1){
value_ed=obj_input.value=obj_div.firstChild.childNodes[li_num].childNodes[1].nodeValue;
}else{
value_ed=obj_input.value=value_ing;
}
setlistyle();
}

%@LANGUAGE="VBSCRIPT" CODEPAGE="65001" %>
%option explicit%>
%Response.CodePage="65001"%>
%Response.Charset="utf-8" %>
!--#include file="conn.asp"-->
%
dim Sift_value
dim Sql,Rs,I,Num
dim Contant
Contant=""
Num=10
Sift_value=replace(unescape(request.form("sift_value")),"""","""""")
Sql="select top "Num" keyword,matchnum from search where keyword like """Sift_value"%"" order by id"
set Rs=server.CreateObject("adodb.recordset")
Rs.open Sql,Conn,1,1
if not (Rs.eof and Rs.bof) then
for I=0 to Num-1
Contant=Contant"'"rs(0)","rs(1)"'"
Rs.movenext
if Rs.eof then exit for
next
end if
response.Write(Contant)
Rs.close
set Rs=nothing
%>