這篇文章主要介紹php ajax即時輸入自動搜尋配對的方法,有興趣的朋友參考下,希望對大家有幫助。
dropbox_index.php
<!DOCTYPE html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>主搜索引擎下拉框自动显示数据</title> </head> <script src="js/dropbox.js" type="text/javascript"></script> <link href="css/dropbox.css" type="text/css" rel="stylesheet"/> <body> <form action="" method="post" enctype="multipart/form-data"> <input name="txt" id="txt" class="txt" type="text" onkeyup ="showHint(this.value)" /> <input type="submit" class="btn" name="submit" value="Upload" /><br /> <span id="txtHint" class="file-box"></span> </form> </body> </html>
#dropbox.js ajax
var xmlHttp function showHint(str) { if (str.length==0) { document.getElementById("txtHint").innerHTML="" return } xmlHttp=GetXmlHttpObject() if (xmlHttp==null) { alert ("Browser does not support HTTP Request") return } var url="responsepage.php" url=url+"?q="+str url=url+"&sid="+Math.random() xmlHttp.onreadystatechange=stateChanged xmlHttp.open("GET",url,true) xmlHttp.send(null) } //设置回调函数 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; }
opbox. #.txt{ height:22px; border:1px solid #cdcdcd; width:220px;border-right:none;}
.btn{ background-color:#FFF; border:1px solid #CDCDCD;height :26px; width:70px;}<?php
//get the q parameter from URL
$q=$_GET["q"];
//全部小写化
$q=strtolower($q);
//非空验证
if(isset($q) && $q != '')
{
$con = mysql_connect("localhost","root","lifu");
if(!$con)
{
die('Could not connect: ' .mysql_error());
}
mysql_select_db("my_db",$con);
$sql = "select * from persons";
//$sql="SELECT FirstName FROM Persons where Firstname like '%$q%'";
$result =mysql_query($sql,$con);
while($row = mysql_fetch_array($result))
{
//匹配判断
if(stristr(strtolower($row['FirstName']),$q))
{
//echo "-----------------Persons-----------------";
echo /* "firstname:" .*/ $row['FirstName'] . "<br />";
//echo "lastname:" . $row['LastName'] . "<br />";
//echo "age:" . $row['Age'] . "<br />";
}
//echo $row['FirstName'] . "<br />";
}
mysql_close($con);
}
?>
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:以上就是這篇文章的全部內容,希望能對大家的學習有所幫助。
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