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模仿IE的自动完成功能,支持FireFox

2006-03-05 00:21 841 查看
<!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");
 _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>
</HEAD>
<BODY>
<div id="divc">
<!--this is the autocomplete container.-->
</div>
<h1>Autocomplete Function</h1>
<div align="center">
<input onkeyup="jsAutoInstance.handleEvent(this.value,'auto',event)" id="auto">
</div>
<div id="divf">
Power By Miracle, never-online
</div>
<SCRIPT LANGUAGE="JavaScript">
<!--
var jsAutoInstance = new jsAuto("jsAutoInstance
8cd5
","divc");
jsAutoInstance.item("a-start,b-start,c-start,d-start,e-start,f-start,g-start,h-start,i-start,j-start,k-start,l-start,m-start,n-start,o-start,p-start,q-start,r-start,s-start,t-start,u-start,v-start,w-start,x-start,y-start,z-start,z-start");
jsAutoInstance.item("blueDestiny");
jsAutoInstance.item("BlueMiracle,Blue");
jsAutoInstance.item("angela,geniuslau");
jsAutoInstance.item("never-online");
//-->
</SCRIPT>
</BODY>
</HTML>

转载自:http://blog.csdn.net/BlueDestiny/archive/2006/02/22/605875.aspx
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