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My server request only goes once

4
I have my server request working but it will only make the request once. onclick calls the ajax function but only once. when i change entires in the form and hit the button nothing happens
Here is the code:

[HTML]<html>
<head>
<script language="javascript" type="text/javascript">
<!--
//Browser Support Code
function ajaxFunction(){
var ajaxRequest; // The variable that makes Ajax possible!

try{
// Opera 8.0+, Firefox, Safari
ajaxRequest = new XMLHttpRequest();
} catch (e){
// Internet Explorer Browsers
try{
ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
} catch (e) {
try{
ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
} catch (e){
// Something went wrong
alert("Your browser broke!");
return false;
}
}
}
// Create a function that will receive data sent from the server
ajaxRequest.onreadystatechange = function(){
if(ajaxRequest.readyState == 4){
var ajaxDisplay = document.getElementById('image');
ajaxDisplay.innerHTML = ajaxRequest.responseText;
}
}
var text = document.getElementById('text').value;
var font = document.getElementById('font').value;
var size = document.getElementById('size').value;
var rl = document.getElementById('rl').value;
var ud = document.getElementById('ud').value;
var queryString = "?text=" + text + "&font=" + font + "&size=" + size + "&rl=" + rl + "&ud=" + ud;
ajaxRequest.open("GET", "mygenerator.php" + queryString, true);
ajaxRequest.send(null);
}

//-->
</script>

<title>Enter dimensions.</title>
</head>

<body>
<table>
<form>
<tr>
<td>Your Text</td><td><input id="text" type="TEXT" name="text" ></td></tr>
<tr>
<td>Select a font</td><td><select id="font" name="font">
<option value="Fonts/Palatino">Palatino</option>
<option value="Fonts/Chicago">Chicago</option>
<option value="Fonts/Skia">Skia</option>
<option value="Fonts/Sand">Sand</option>
<option value="Fonts/Courier">Courier</option>
<option value="Fonts/Jokerman LET Fonts">Jokerman</option>
<option value="Fonts/Techno">Techno</option>
<option value="Fonts/Charcoal">Charcoal</option>
</select></td></tr>
<tr><td>Size eg.20-100</td><td><input id="size" type="TEXT" name="size" size="5"></td></tr>
<tr><td>Position (left/right)</td><td><input id="rl" type="TEXT" name="rl" size="5"></td></tr>
<tr><td>Position (up/down)</td><td><input id="ud" type="TEXT" name="ud" size="5"></td></tr>
<tr>
<td>SUBMIT</td><td><input type="BUTTON" onclick="ajaxFunction()" value="check"></td></tr>
</form><br />
</table>
<div id="image">in here maybe</div>
</body>
</html>[/HTML]
Mar 12 '08 #1
7 1606
acoder
16,027 Expert Mod 8TB
It's possible it may be cached. To avoid caching, add something like "&t="+(new Date()).getTime() to the URL.
Mar 13 '08 #2
injia
4
It's possible it may be cached. To avoid caching, add something like "&t="+(new Date()).getTime() to the URL.
I tried that and no luck. Any other sugestions?
Thanks
Mar 14 '08 #3
acoder
16,027 Expert Mod 8TB
Hmm, how about moving the onreadystatechange to after the open(), i.e. open, then onreadystatechange, then send().

If you were to test with those same parameters without Ajax, does it give the correct response? You should encode the parameters using encodeURIComponent().

Hope that helps.
Mar 14 '08 #4
injia
4
Hmm, how about moving the onreadystatechange to after the open(), i.e. open, then onreadystatechange, then send().

If you were to test with those same parameters without Ajax, does it give the correct response? You should encode the parameters using encodeURIComponent().

Hope that helps.
Thanks for trying again but none of that worked either.
I have tried with just the php pages. It worked.
I would be happy to put the php page here but as it processes it once I can't believe the problem is there. The image that is generated will always have the same name. Could that have an effect on the cache?
Just checked the cache.
It must be the problem as when i emptied it it worked and then stored it again.
using firefox and safari to test
baffled again!
Mar 15 '08 #5
acoder
16,027 Expert Mod 8TB
What is it that you return from the Ajax request? Is it an img tag?

Try adding the date/time to the src of the image.
Mar 16 '08 #6
injia
4
What is it that you return from the Ajax request? Is it an img tag?

Try adding the date/time to the src of the image.
YOU GOT IT!!!
Thank you!!
My bruised head can heal now!!
Mar 16 '08 #7
acoder
16,027 Expert Mod 8TB
Lol - you're welcome. Post again if you have more questions ;)
Mar 16 '08 #8

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