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09.28.2008 at 08:52PM PDT, ID: 23770376
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9.1

Using selectedIndex.value

Asked by Simon336697 in PHP Scripting Language, JavaScript

Hi guys im having issues with getting the value a user has selected from a combo box and would love your help.

I think my problem is in the following.
Im trying to grab the selected value from a select box.

<script type="text/javascript">
function getname() {
var x = document.getElementById("projectid").selectedIndex.value;
document.write('<a href="showtasks_selects.php?x='+x+'">another page</a>');
}
</script>

In the combo box, it is populated, but when i run the above, im getting a value of x=undefined.

The complete code is below...Start Free Trial 
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=================================================== showtasks_select.php
<head>
<link rel="stylesheet" media="all" type="text/css" href="tasks.css" />
 
<?php
include ("connectiondb.php");
$tbl_tasks="currenttasks_ctk";
$tbl_projects="projects_pro";
$sql="SELECT * FROM `$tbl_tasks`, `$tbl_projects` where fk_id_pro_ctk = id_pro";
// $sql="SELECT * FROM `$tbl_tasks`, `$tbl_projects` where name_pro = {$_GET['projectid']}";
$sql2="SELECT DISTINCT name_pro FROM `$tbl_tasks`, `$tbl_projects` where fk_id_pro_ctk = id_pro";
$result=mysql_query($sql);
$result2=mysql_query($sql2);
// $count=mysql_num_rows($result);
// $nameselected = $_GET['projectid'];
?>
 
<script type="text/javascript">
	function proname() {
	document.formcombo.submit();	
	}
</script>
 
</head>
 
<body>
	
<form name="formcombo" method="post" action="showtasks_selects.php">
 
		<label for="project" class="formlabels" style="margin-top:2%;">Project:</label>				
		
		<select name="projectid" id="projectid" onchange = "getname();">
				<!--<select name="projectid" id="projectid"> -->
			
			<?php 
				while($row2=mysql_fetch_array($result2)) {
					echo "<option value=\"".$row2['id_pro']."\">".$row2['name_pro']."\n";	
				}
			?>
		</select>
 
</form>		
 
<script type="text/javascript">
	function getname() {
	var x = document.getElementById("projectid").selectedIndex.value;
	document.write('<a href="showtasks_selects.php?x='+x+'">another page</a>');
}
	</script>
	
	
<div id="delete_rows_wrapper">
	
	<table>
	
	<form name="form1" method="post" action="">
		
		<tr>
			<td class="toptd" colspan="4"><b>The following are rows from the tasks table</b> </td>
		</tr>
		
		<tr>
			<td><b>ID</b></td>
			<td><b>Task Name</b></td>
			<td><b>Project</b></td>
			<td><b>Description</b></td>
		</tr>		
		
		<?php while($rows=mysql_fetch_array($result)){ ?>
		<tr>
			<td><?php echo $rows['id_ctk']; ?></td>
			<td><?php echo $rows['name_ctk']; ?></td>
			<td><?php echo $rows['name_pro']; ?></td>
			<td><?php echo $rows['description_ctk']; ?></td>
		</tr> <?php } ?>		
		
	</form>
	</table>
 
</div> <!-- end delete_rows_wrapper -->
 
</body>
 
============================================== showtasks_selects.php
<head>
<link rel="stylesheet" media="all" type="text/css" href="tasks.css" />
 
 
</head>
 
<body>
 
<?php
$names = $_GET['projectid'];
echo $names;
?>
 
 
</body>
[+][-]09.28.2008 at 09:02PM PDT, ID: 22593894

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About this solution

Zones: PHP Scripting Language, JavaScript
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Solution Provided By: crush83
Participating Experts: 3
Solution Grade: A
 
 
[+][-]09.28.2008 at 09:03PM PDT, ID: 22593897

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[+][-]09.28.2008 at 09:15PM PDT, ID: 22593914

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[+][-]09.28.2008 at 11:12PM PDT, ID: 22594191

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[+][-]09.28.2008 at 11:18PM PDT, ID: 22594201

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[+][-]09.29.2008 at 12:17AM PDT, ID: 22594377

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