下面是js的内容clienthint.js。
[U]复制代码[/U] 代码如下:
var xmlHttp
function showHint(str)
{
if (str.length==0)
{
document.getElementById("txtHint").innerHTML=""
return
}
//获取xmlHttpObject对象,如果为空,提示浏览器不支持ajax
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
{
alert ("Browser does not support HTTP Request")
return
}
//获取url
var url="gethint.php"
url=url+"?q="+str
url=url+"&sid="+Math.random()
//回调函数,执行动作
xmlHttp.onreadystatechange=stateChanged
//open
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}
function stateChanged()
{
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
{
//将获取的信息插入到txtHint中
document.getElementById("txtHint").innerHTML=xmlHttp.responseText
}
}
//获取xml对象
function GetXmlHttpObject()
{
var xmlHttp=null;
try
{
// Firefox, Opera 8.0+, Safari
xmlHttp=new XMLHttpRequest();
}
catch (e)
{
// Internet Explorer
try
{
xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e)
{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
}
return xmlHttp;
}
下面是php的内容。根据ajax对象传入的参数,获取相应的数据。
[U]复制代码[/U] 代码如下:
//get the q parameter from URL
$q=$_GET["q"];
//lookup all hints from array if length of q>0
if (strlen($q) > 0)
{
$hint="";
for($i=0; $i
//Set output to "no suggestion" if no hint were found
//or to the correct values
if ($hint == "")
{
$response="no suggestion";
}
else
{
$response=$hint;
}
//output the response
echo $response;
?>