 
<html xmlns="http://www.w3.org/1999/xhtml" > 
<head runat="server"> 
<title>無標(biāo)題頁</title> 
<script type="text/javascript" language="javascript"> 
var currentIndex=-1;//保存提示框中選擇的索引 
var sumSearchCount=0;//保存提示框中數(shù)據(jù)數(shù)量 
var tempValue="";//保存當(dāng)前輸入的要搜索的內(nèi)容 
var objTxt="";//保存文本框?qū)ο?
var top=0;//提示框的top 
var left=0;//提示框的left 
var width=0;//提示框的width 
var values = new Array();//保存下拉列表的值 
var texts = new Array();//保存下拉列表的顯示內(nèi)容 
var tempDiv=new Array();//保存提示框中索引對應(yīng)的values索引 
//獲取下拉列表的值和顯示內(nèi)容 
function getSelectValues(ddl){ 
ddlvalue = document.getElementById("DropDownList1"); 
for(var i=0;i<ddlvalue.length;i++){ 
values[i]=ddlvalue.options[i].value; 
texts[i]=ddlvalue.options[i].text; 
} 
} 
var oInterval = "";//保存自動計時對象 
function fnStartInterval(txt_id){ 
getSelectValues("DropDownList1"); 
objTxt=txt_id;//獲取輸入文本框?qū)ο?
top = getLength("offsetTop")+objTxt.offsetHeight; 
left= getLength("offsetLeft"); 
width=objTxt.offsetWidth; 
oInterval = window.setInterval("beginSearch()",2000);//啟用計時 
} 
//獲取對應(yīng)屬性的長度 
function getLength(attribute) 
{ 
var offset = 0; 
var txt_input = document.getElementById("txtSearch"); 
while (item) 
{ 
offset += txt_input[attribute]; 
txt_input = txt_input.offsetParent; 
} 
return offset; 
} 
//停止計時 
function fnStopInterval() 
{ 
window.clearInterval(oInterval); 
} 
//自動完成提示 
function beginSearch(){ 
if(objTxt.value.length>0 && tempValue!=objTxt.value) 
{ 
sumSearchCount=0; 
tempValue=objTxt.value; 
var div_show = document.getElementById("divMsg"); 
div_show.style.top=top+"px"; 
div_show.style.display="block"; 
div_show.style.left=left+"px"; 
div_show.style.width=width+"px"; 
div_show.innerHTML=""; 
var leng = texts.length; 
var txt_value = objTxt.value; 
var row=""; 
for(var i=0;i<leng;i++){ 
if(texts[i].indexOf(txt_value)!=-1){ 
row = row + "<div style=\"font-size:14px; display:block; width:100%\" id='divsearch_"+i+"' onmouseover=\"this.style.backgroundColor='#3366CC';currentIndex="+i+";\" onmouseout=\"this.style.backgroundColor='';currentIndex=-1;\" onclick=\"span_click(this)\" >"+texts[i]+"</div>"; 
tempDiv[sumSearchCount]=i; 
sumSearchCount++; 
} 
} 
div_show.innerHTML=row; 
} 
else if(objTxt.value.length==0 || objTxt.value == null) 
{ 
var div_msg = document.getElementById("divMsg"); 
div_msg.style.display="none"; 
div_msg.innerHTML=""; 
} 
} 
//提示內(nèi)容單擊保存到文本框中 
function span_click(sp) 
{ 
clear(); 
objTxt.value=sp.innerHTML; 
document.getElementById("DropDownList1").options[sp.id.substring(sp.id.indexOf('_')+1,sp.id.length)].selected="selected"; 
} 
//停止查詢，關(guān)閉提示 
function closeSearch() 
{ 
var tbl = document.activeElement.parentElement; 
if(tbl && tbl.id!="divMsg")//防止使用上下鍵后丟失提示內(nèi)容 
{ 
clear(); 
document.getElementById("divMsg").innerHTML=""; 
} 
else if(currentIndex==-1) 
{ 
clear(); 
document.getElementById("divMsg").innerHTML=""; 
} 
} 
//清空提示 
function clear() 
{ 
fnStopInterval(); 
currentIndex=-1; 
tempValue=""; 
document.getElementById("divMsg").style.display="none"; 
} 
//使用鍵盤上下方向鍵和enter鍵 
function changeSelect() 
{ 
var divContent = document.getElementById("divMsg"); 
if(divContent && divContent.style.display=="block") 
{ 
if (event.keyCode == 38 || event.keyCode == 40 || event.keyCode == 13) 
{ 
if(currentIndex!=-1) document.getElementById("divsearch_"+tempDiv[currentIndex]).style.backgroundColor=""; 
if (event.keyCode == 38 && currentIndex > 0) 
{ 
currentIndex--; 
document.getElementById("divsearch_"+tempDiv[currentIndex]).style.backgroundColor="#3366CC"; 
} 
else if (event.keyCode == 40 && currentIndex < sumSearchCount-1) 
{ 
currentIndex++; 
document.getElementById("divsearch_"+tempDiv[currentIndex]).style.backgroundColor="#3366CC"; 
} 
else if (event.keyCode == 13) 
{ 
if(currentIndex > -1) 
{ 
var divpart = document.getElementById("divsearch_"+tempDiv[currentIndex]); 
objTxt.value=divpart.innerHTML; 
document.getElementById("DropDownList1").options[tempDiv[currentIndex]].selected="selected"; 
clear(); 
} 
} 
} 
} 
} 
</script> 
</head> 
<body> 
<form id="form1" runat="server"> 
<div> 
<input type="text" id="txtSearch" autocomplete="off" onkeydown="changeSelect()" onfocus="fnStartInterval(this)" onblur="closeSearch()" runat="server" /> 
<asp:DropDownList ID="DropDownList1" runat="server" DataTextField="slr_realname" DataValueField="systemloginrecord_id" DataSourceID="ObjectDataSource1" Width="130px"> 
</asp:DropDownList><asp:ObjectDataSource ID="ObjectDataSource1" runat="server" SelectMethod="GetRecordDS" 
TypeName="TestDAL"></asp:ObjectDataSource> 
</div> 
<div style="display:none; z-index:2; text-align:left; position:absolute; border:solid 1px;" id="divMsg"> 
</div> 
</form> 
</body> 
</html> 

<input type="text" id="txtSearch" autocomplete="off"。。。這里加入了autocomplete屬性，屏蔽了文本框輸入記錄提示功能，雖然這個功能很好，但是在這里卻成了絆腳石。呵呵
以前沒有寫博客的習(xí)慣，好多不經(jīng)常使用的東西用過就忘了。以后是要整理整理了。

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