[英]javascript ajax php display
by using javascript ajax i have passed the values to php page... display the values after retrieving from database and print in ajax page...it displaying in alert page...but i need to display in ajax page.... 通过使用javascript ajax,我已将值传递给php页面...从数据库中检索后显示值并在ajax页面中打印...在警报页面中显示...但是我需要在ajax页面中显示...。
ajax coding Ajax编码
<script>
function optionsAlert()
{
alert("call");
var xmlhttp;
var qw=document.getElementById('c').value;
var qw1=document.getElementById('c1').value;
var qw2=document.getElementById('unit33').value;
var qw3=document.getElementById('dept').value;
var qw4=document.getElementById('class').value;
alert(qw);
alert(qw1);
alert(qw2);
alert(qw3);
alert(qw4);
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
alert(xmlhttp.responseText);
if(xmlhttp.responseText==1){
alert("name already Exists" );
return false;
}
else if(xmlhttp.responseText==0)
{
alert("name available");
document.login.submit();
}
}
}
var queryString = "?q=" + qw + "&q1=" + qw1 + "&q2=" + qw2 + "&q3=" + qw3 + "&q4=" + qw4;
xmlhttp.open("get",'ques.php' + queryString,true);
xmlhttp.send();
}
php page php页面
<?php
include('connection.php');
if(($_GET['q']!='') && ($_GET['q1']!='') && ($_GET['q2']!='') && ($_GET['q3']!='') && ($_GET['q4']!=''))
{
$a= mysql_query("select * from unit1 where unit='".$_GET['q']."' and stopic='".$_GET['q1']."' and qtype='".$_GET['q2']."' and dept='".$_GET['q3']."' and class='".$_GET['q4']."'");
//$a= mysql_query("select * from unit1 where unit='unit1' and stopic='Subtopic1' and qtype='normal questions'");
if(mysql_num_rows($a)>0)
{
while($row=mysql_fetch_array($a))
{
$a1=$row['qno'];
$a2=$row['ques'];
$a3=$row['ch1'];
$a4=$row['ch2'];
$a5=$row['ch3'];
$a6=$row['ch4'];
$a7=$row['ans'];
echo $a1."<br>";echo $a2."<br>";echo $a3."<br>";echo $a4."<br>";echo $a5."<br>";echo $a6."<br>";echo $a7."<br>";
echo 1;
}
}
else
{
echo 0;
}
}
?>
Below the ajax coding create div element with id 在ajax编码下面,创建具有id的div元素
in your ajax method 在你的ajax方法
if(xmlhttp.responseText==1){
document.getElementById("id").innerHTML = "name already Exists";
return false;
}
else if(xmlhttp.responseText==0)
{
document.getElementById("id").innerHTML="name available";
document.login.submit();
}
"id" your own div id “ id”是您自己的div ID
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