我试图将更改下拉列表的值发送到 php 脚本。但是以我解决问题的方式,表单和状态字符串被发布了两次。一次带有 GET 参数集,另一次没有。我不知道如何解决,但也许你比我聪明。
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript" src="js/jquery.easing.1.3.js"></script>
<script type="text/javascript" src="js/jquery.ennui.contentslider.js"></script>
<script type="text/javascript">
function showUser()
{
var users = document.getElementById('users').value;
if (users=="" )
{
document.getElementById("pictab").innerHTML="";
return;
}
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)
{
document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","slider.php?users="+users,true);
xmlhttp.send();
xmlhttp.reload();
}
<?php
//.............
//..............
//.............
//..............
$soso = mysql_num_rows($connn3);
for($i=0;$i<$soso;$i++)
{
echo "
$(function() {
$('#one$i').ContentSlider({
width : '280px',
height : '180px',
speed : 400,
easing : 'easeOutQuad'
});
});";
}
?>
</script>
<!-- Site JavaScript -->
<form>
<select id="users" name="users" onChange="showUser()" >
<option value="bikes">Bikes</option>
<option value="zub">Stuff/option>
<option value="sonst">Other</option>
</select>
</form>
<br>
<div id="txtHint"></div>
<?php
if(isset($_GET['users'])){
echo "<h2>Q posted</h2>";
$q = $_GET['users'];
echo $q;
//DB QUERY WITH Q
}elseif(!isset($q)){
echo "KEIN Q GEPOSTET";
// DB QUERY WITHOUT Q
}
?>