xmlhttp
=
new
ActiveXObject
(
"
Microsoft.XMLHTTP
"
)
;
xmlhttp
.
onreadystatechange
=
function
(
)
if
(
xmlhttp
.
readyState
==
4
&&
xmlhttp
.
status
==
200
)
document
.
getElementById
(
"
txtHint
"
)
.
innerHTML
=
xmlhttp
.
responseText
;
xmlhttp
.
open
(
"
GET
"
,
"
/try/ajax/gethint.php?q=
"
+
str
,
true
)
;
xmlhttp
.
send
(
)
;
以上实例 JavaScript 调用的服务器页面是 PHP 文件，名为
gethint.php
。
下面，我们创建了两个版本的服务器文件，一个用 ASP 编写，另一个用 PHP 编写。
ASP 文件
"gethint.asp" 中的源代码会检查一个名字数组，然后向浏览器返回相应的名字：
response.expires=-1
dim a(30)
'Fill up array with names
a(1)="Anna"
a(2)="Brittany"
a(3)="Cinderella"
a(4)="Diana"
a(5)="Eva"
a(6)="Fiona"
a(7)="Gunda"
a(8)="Hege"
a(9)="Inga"
a(10)="Johanna"
a(11)="Kitty"
a(12)="Linda"
a(13)="Nina"
a(14)="Ophelia"
a(15)="Petunia"
a(16)="Amanda"
a(17)="Raquel"
a(18)="Cindy"
a(19)="Doris"
a(20)="Eve"
a(21)="Evita"
a(22)="Sunniva"
a(23)="Tove"
a(24)="Unni"
a(25)="Violet"
a(26)="Liza"
a(27)="Elizabeth"
a(28)="Ellen"
a(29)="Wenche"
a(30)="Vicky"
'get the q parameter from URL
q=ucase(request.querystring("q"))
'lookup all hints from array if length of q>0
if len(q)>0 then
hint=""
for i=1 to 30
if q=ucase(mid(a(i),1,len(q))) then
if hint="" then
hint=a(i)
hint=hint & " , " & a(i)
end if
end if
end if
'Output "no suggestion" if no hint were found
'or output the correct values
if hint="" then
response.write("no suggestion")
response.write(hint)
end if
PHP 文件
下面的代码用 PHP 编写，与上面的 ASP 代码作用是一样的。
// Fill up array with names
$a[]="Anna";
$a[]="Brittany";
$a[]="Cinderella";
$a[]="Diana";
$a[]="Eva";
$a[]="Fiona";
$a[]="Gunda";
$a[]="Hege";
$a[]="Inga";
$a[]="Johanna";
$a[]="Kitty";
$a[]="Linda";
$a[]="Nina";
$a[]="Ophelia";
$a[]="Petunia";
$a[]="Amanda";
$a[]="Raquel";
$a[]="Cindy";
$a[]="Doris";
$a[]="Eve";
$a[]="Evita";
$a[]="Sunniva";
$a[]="Tove";
$a[]="Unni";
$a[]="Violet";
$a[]="Liza";
$a[]="Elizabeth";
$a[]="Ellen";
$a[]="Wenche";
$a[]="Vicky";
//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; $i<count($a); $i++)
if (strtolower($q)==strtolower(substr($a[$i],0,strlen($q))))
if ($hint=="")
$hint=$a[$i];
$hint=$hint." , ".$a[$i];
// Set output to "no suggestion" if no hint were found
// or to the correct values
if ($hint == "")
$response="no suggestion";
$response=$hint;
//output the response
echo $response;
