下拉文本框结合XMLHTTP，实现用户便捷输入功能。。

原作者：Bluedestiny
修改：MeChecksV
得到Bluedestiny大力帮助，在此表示衷心的感谢。。

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<style>
body,div {
font-family:verdana;
line-height:100%;
font-size:9pt;
}
input {
width:300px;
}
h1 {
text-align:center;
font-size:2.2em;
}
#divf {
margin:10px;
font-size:0.8em;
text-align:center;
}
#divc {
border:1px solid #333333;
}
.des {
width:500px;
background-color:lightyellow;
border:1px solid #333;
padding:20px;
margin-top:20px;
}
.mouseover {
color:#ffffff;
background-color:highlight;
width:100%;
cursor:default;
}
.mouseout {
color:#000000;
width:100%;
background-color:#ffffff;
cursor:default;
}
</style>
<SCRIPT LANGUAGE="JavaScript">
<!--

// script by blueDestiny
// Email : blueDestiny [at] 126 . com

// Object: jsAuto
// browser: ie, mf.
// example:

// step1 :
// create autocomplete container, return object and bind event to the object, and
///create a new jsAuto instance:
// <div id="divautocomplete"></div>
// var autocomplete = new jsAuto("autocomplete","divautocomplete")
// handle event:
// autocomplete.handleEvent(value, returnObjectID)
// <input id="rautocomplete" onkeyup="autocomplete.handleEvent(this.value,"ratocomplete",event)>

// step2 :
// add autocompete item:
// autocomplete.item(string)
// string must be a string var, you can split the string by ","
// autocomplete.item("blueDestiny,never-online,csdn,blueidea")

// http://www.never-online.com

//instanceName为你生成的实例名，objID为监听的对象ID
//具体请见最下面的例子

function jsAuto(instanceName,objID)
{
//初始化成员；
//_msg: 预先实例化的自动完成内容
this._msg = [];
this._x = null;
this._o = document.getElementById( objID );
if (!this._o) return;
//标志flag的缩写
this._f = null;
//instanceName的缩写
this._i = instanceName;

//返回的对象
//returnObject
this._r = null;
//按上下键时，得到当前的mouseover是第几个元素
//count
this._c = 0;
//是否可以执行按上下键
//selectflag
this._s = false;
//Value的缩写
this._v = null;
//初始化object的状态
this._o.style.display = "none";
this._o.style.position = "absolute";
this._o.style.zIndex = "9999";
return this;
};

//触发的按上下的键盘事件
//效率不算高，可优化

jsAuto.prototype.directionKey=function() { with (this)
{
var e = _e.keyCode ? _e.keyCode : _e.which;
var l = _o.childNodes.length;
(_c>l-1 || _c<0) ? _s=false : "";

if( e==40 && _s )
{
  _o.childNodes[_c].className="mouseout";
  (_c >= l-1) ? _c=0 : _c ++;
  _o.childNodes[_c].className="mouseover";
}
if( e==38 && _s )
{
  _o.childNodes[_c].className="mouseout";
  _c--<=0 ? _c = _o.childNodes.length-1 : "";
  _o.childNodes[_c].className="mouseover";
}
if( e==13 )
{
  if(_o.childNodes[_c] && _o.style.display=="block")
  {
   _r.value = _x[_c];
   _o.style.display = "none";
  }
}
if( !_s )
{
  _c = 0;
  _o.childNodes[_c].className="mouseover";
  _s = true;
}
}};

// mouseEvent.
// 鼠标事件

jsAuto.prototype.domouseover=function(obj) { with (this)
{
_o.childNodes[_c].className = "mouseout";
_c = 0;
obj.tagName=="DIV" ? obj.className="mouseover" : obj.parentElement.className="mouseover";
}};
jsAuto.prototype.domouseout=function(obj)
{
obj.tagName=="DIV" ? obj.className="mouseout" : obj.parentElement.className="mouseout";
};
jsAuto.prototype.doclick=function(msg) { with (this)
{
if(_r)
{
  _r.value = msg;
  _o.style.display = "none";
}
else
{
  alert("javascript autocomplete ERROR :\n\n can not get return object.");
  return;
}
}};

// object method;
// 对象的原型方法

// 添加项目;
// 可以用英文,分割
// JK说的是对的，我当初也是不想用逗号的
// 如果你不想用,分割，可自己改写这里

jsAuto.prototype.item=function(msg)
{
if( msg.indexOf("|")>0 )
{
  var arrMsg=msg.split("|");
  for(var i=0; i<arrMsg.length; i++)
  {
   arrMsg[i] ? this._msg.push(arrMsg[i]) : "";
  }
}
else
{
  this._msg.push(msg);
}
this._msg.sort();
};
jsAuto.prototype.append=function(msg) { with (this)
{
_i ? "" : _i = eval(_i);
_x.push(msg);
var div = document.createElement("DIV");

//bind event to object.
div.onmouseover = function(){_i.domouseover(this)};
div.onmouseout = function(){_i.domouseout(this)};
div.onclick = function(){_i.doclick(msg)};
var re = new RegExp("(" + _v + ")","i");
div.style.lineHeight="140%";
div.className = "mouseout";
if (_v) div.innerHTML = msg.replace(re , "<strong>$1</strong>");
div.style.fontFamily = "verdana";

_o.appendChild(div);
}};
jsAuto.prototype.display=function() { with(this)
{
if(_f&&_v!="")
{
  _o.style.left = _r.offsetLeft;
  _o.style.width = _r.offsetWidth;
  _o.style.top = _r.offsetTop + _r.offsetHeight;
  _o.style.display = "block";
}
else
{
  _o.style.display="none";
}
}};
jsAuto.prototype.handleEvent=function(fValue,fID,event) { with (this)
{
var re;
_e = event;
var e = _e.keyCode ? _e.keyCode : _e.which;
_x = [];
_f = false;
_r = document.getElementById( fID );
_v = fValue;
// 这里用eval，返回生成的实例对象。
_i = eval(_i);
re = new RegExp(fValue, "i"); //模糊查询，"^" + fValue + ""完全匹配
_o.innerHTML="";

for(var i=0; i<_msg.length; i++)
{
  if(re.test(_msg[i]))
  {
   _i.append(_msg[i]);
   _f = true;
  }
}

_i ? _i.display() : alert("can not get instance");

if(_f)
{
  // 触发上下键盘的事件
  if((e==38 || e==40 || e==13))
  {
   _i.directionKey();
  }
  else
  {
   _c=0;
   _o.childNodes[_c].className = "mouseover";
   _s=true;
  }
}
}};
window.onerror=new Function("return true;");
//-->
</SCRIPT>

<SCRIPT LANGUAGE="JavaScript">
<!--
jsAuto.prototype.clear=function() { with(this)
{
_msg.length = 0;
}};

var jsAutoInstance = new jsAuto("jsAutoInstance","divc");

function check_user_exists(form){
u_name=form.u_name.value;

myurl=top.location.href+"webback/system/cgdwUser.asp?u_name="+u_name; //提交的地址
retCode=openUrl(myurl);

// 清空数组
jsAutoInstance.clear();
jsAutoInstance.item(retCode);

return;
}

</BODY>
</HTML>

后台程序

<%Dim u_name,rs,sql
u_name=Request.QueryString("u_name")
sql="select uloginname from zc_user where uloginname like '%"&u_name&"%'"
set rs=server.CreateObject("adodb.recordset")
rs.open sql,conn,1,1
if not rs.eof then
   do while not rs.eof
   Response.write ""&rs(0)&"|"
   rs.movenext
   loop
   rs.close
else
response.Write "NO RESLUT!"
end if %>

注意应用此程序，要对相关部分修改你本程序的值。。

posted on 2006-06-13 15:39 许维光阅读(462) 评论(0) 收藏举报