?? ajax.txt
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今天我來做一個Ajax文本框輸入提示的例子:
前臺文件
<!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" />
<title>文本框輸入提示</title>
<style type="text/css">...
<!--
.keyword {...}{width:150px; height:20px; border:#0066FF 1px solid;}/**//*文本框樣式*/
#keytishi {...}{width:150px; height:auto; border:#0066FF 1px solid; position:absolute; display:none;}/**//*提示層樣式*/
#keytishi ul {...}{ margin:0;}/**//*提示層樣式*/
#keytishi ul li{...}{margin:0;list-style-type:none; line-height:16px; height:16px; font-size:12px; padding:2px;}/**//*提示層樣式*/
#keytishi ul li a {...}{display:block; width:150px; height:16px; text-decoration:none;}/**//*提示層樣式*/
#keytishi ul li a:hover {...}{background-color:#0099FF;}/**//*提示層樣式*/
-->
</style>
<script type="text/javascript">...
<!--
//建立XMLHttpRequest對象
var xmlhttp;
try...{
xmlhttp= new ActiveXObject(''Msxml2.XMLHTTP'');
}catch(e)...{
try...{
xmlhttp= new ActiveXObject(''Microsoft.XMLHTTP'');
}catch(e)...{
try...{
xmlhttp= new XMLHttpRequest();
}catch(e)...{}
}
}
function getKeyWord()...{
var obj = document.getElementById("search");//獲取文本域對象
if(obj.value=="")...{
return;
}
var top=0;
var left=0;
while(obj)...{//此循環(huán)得到文件域對象在頁面中的絕對位置
top += obj["offsetTop"];
left += obj["offsetLeft"];
obj = obj.offsetParent;
}
xmlhttp.open("get","input.asp?keyword="+document.getElementById("search").value,true);
xmlhttp.onreadystatechange = function()...{
if(xmlhttp.readyState == 4)
...{
if(xmlhttp.status == 200)
...{
if(xmlhttp.responseText!="")...{
document.getElementById("keytishi").innerHTML = unescape(xmlhttp.responseText);//把后臺返回的數(shù)據(jù)填充到提示層
document.getElementById("keytishi").style.left = left + "px";//設置提示層的位置,左
document.getElementById("keytishi").style.top = (top + 25) + "px";//設置提示層的位置,上
document.getElementById("keytishi").style.display = "block";//設置提示層可見
}else...{
document.getElementById("keytishi").innerHTML = "";//清空提示層
document.getElementById("keytishi").style.display = "none";//設置提示層不可見
}
}
else...{
}
}
}
xmlhttp.setRequestHeader("If-Modified-Since","0");
xmlhttp.send(null);
}
function input(str)...{
document.getElementById("search").value=str;//從提示層選擇你需要的數(shù)據(jù)填充到文本框
document.getElementById("keytishi").innerHTML = "";//清空提示層
document.getElementById("keytishi").style.display = "none";//設置提示層不可見
}
//-->
</script>
</head>
<body>
<input type="text" class="keyword" id="search" name="search" onkeyup="getKeyWord();" onclick="getKeyWord();" />
<div id="keytishi"></div><!--提示層-->
</body>
</html>
后臺文件 [input.asp]
<%...@LANGUAGE="VBSCRIPT" CODEPAGE="65001"%>
<!--#include file="conn.asp"-->
<%...
dim rs
dim sql
dim keyWords
keyWrods = Request("keyword")
Set rs = Server.CreateObject("ADODB.Recordset")
sql = "select * from king_test where keyword like ''%"&keyWrods&"%''"
rs.open sql,conn,1,1
if not (rs.bof and rs.eof) then
Response.Write("<ul>")
do while not rs.eof
%>
<li><a href="javascript:void(null);" onclick="input(''<%Response.Write(escape(rs("keyword")))%>'');"><%...Response.Write(escape(rs("keyword")))%></a></li>
<%...
rs.movenext
loop
Response.Write("<ul>")
end if
rs.close
set rs = nothing
conn.close
Set conn = nothing
%>?? 快捷鍵說明
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