Why won't my ajax AutoSave work?
Question
I'm using a script found on this page: http://jetlogs.org/2007/11/11/auto-saving-with-jquery/ to autosave a form I have. I'm only trying to save the textarea for the form. Here's the relevant code:
<head>
<script type="text/javascript">
$(document).ready(function(){
autosave();
});
function autosave()
{
var t = setTimeout("autosave()", 5000);
var comments = $("#comments").val();
if (comments.length > 0)
{
$.ajax(
{
type: "POST",
url: "autosave.php",
data: "rubric_id=" + <?php echo $rubricid ?> + "&student_id=" + <?php echo $studentid ?> + "&comments=" + comments,
cache: false,
success: function(message)
{
$("#autosave_status").empty().append(message);
}
});
}
}
</script>
</head>
<body>
<div id="autosave_status"></div>
<form action='assess.php?student=146&rubric=19' method='POST'>
<textarea id="elm1" name="comments" rows="15" cols="80" style="width: 80%">
</form>
</body>
And here's the PHP:
<?php
//include DB configuration file
include "../../signout/database.php";
$comments = mysql_real_escape_string($_POST['comments']);
$rubric_id = (int)$_POST['rubric_id'];
$student_id = (int)$_POST['student_id'];
//save contents to database
$sql = "UPDATE rubrics_comments SET comments = '$comments' WHERE studentid = '$student_id' AND rubricid='$rubric_id'";
mysql_query($sql) or die (mysql_error());
echo $sql;
//output timestamp
echo 'Saved';
?>
It seems almost as though the ajax isn't even working, since I'm not seeing any display changes or error messages on the page where the form is located.
Any ideas? Thanks!
3 answers
solution1
5 2011-07-27 21:26:19
your textarea has an id of elm1
<textarea id="elm1" name="comments" rows="15" cols="80" style="width: 80%">
but your trying to access it by
$("#comments")
change to
$("#elm1")
or
$("[name=comments]")
solution2
1 2011-07-27 21:27:05
Your textarea's id is not "comments". And you're using an id selector $("#id");
solution3
1 2011-07-27 21:30:13
Two things:
change
var comments = $("#comments").val();
to
var comments = $("#elm1").val();
And close your textarea element:
</textarea>
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