日期:2014-05-16 浏览次数:20895 次
<html> <head> <script src="clienthint.js"></script> </head> <body> <form> First Name: <input type="text" id="txt1"> <input type="button" value="Submit" onClick="showHint()"> </form> <p>Suggestions: <span id="txtHint"></span></p> </body> </html>
var xmlHttp
function showHint()
{
var str = document.getElementById("txt1").value;
if (str.length==0)
  {
  document.getElementById("txtHint").innerHTML="";
  return;
  }
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null)
  {
  alert ("Browser does not support HTTP Request");
  return;
  }
var url="gethint.php";
var content="qt="+str;
content=content+"&sid="+Math.random();
xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded");//for post
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("POST",url,true);
xmlHttp.send(content);
}
function stateChanged()
{
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 {
 document.getElementById("txtHint").innerHTML=xmlHttp.responseText;
 }
}
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;
}
<?php
// Fill up array with names
$a[]="Anna";
$a[]="Brittany";
$q = $_POST["qt"];
if (strlen($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];
      }
    else
      {
      $hint=$hint." , ".$a[$i];
      }
    }
  }
}
else echo "q is empty!<br>";
//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;
echo " to ";
echo $q;
echo "<br>";
?>