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Can someone help me with prototype.js?


Just_Johnny

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I'm new to javascript.

 

I've read MANY tutorials, but I'm just not getting it.

 

What I'm trying to accomplish is very simple. (not for me)

 

I have 3 drop-downs.

 

1st. Populates from simple mysql query.

 

2nd.  Are just static values.

 

3rd. Needs to populate from database from a query that uses values from 1st and 2nd drop down.

 

When I read tutorials on how to do this I keep getting lost.  I've never done anything like this before. 

 

Can anybody help?

 

 

 

 

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<html>
<!--
 Please see the full php-ajax tutorial at http://www.php-learn-it.com/tutorials/starting_with_php_and_ajax.html
 If you found this tutorial useful, i would apprciate a link back to this tutorial. 
 Visit http://www.php-learn-it.com for more php and ajax tutrials
 -->
<title>php-learn-it.com - php ajax form submit</title>
<head>		
	<script type="text/javascript" src="prototype.js"></script>
	<script>

		function sendRequest() {
			new Ajax.Request("test.php", 
				{ 
				method: 'post', 
				postBody: 'name='+ $F('name'),
				onComplete: showResponse 
				});
			}

		function showResponse(req){
			$('show').innerHTML= req.responseText;
		}
	</script>
</head>

<body>
	<form id="test" onsubmit="return false;">
		Name: <input type="text" name="name" id="name" >
		<input type="submit" value="submit" onClick="sendRequest()">
	</form>

	<div id="show"></div>
	<br/><br/>
	<a href="../../starting_with_php_and_ajax.html"><< back to php ajax tutorial</a>
</body>

</html>

 

This does this http://www.php-learn-it.com/tutorials/demos/starting_with_php_ajax/test.html

 

I want to do the same thing but only with a drop down.

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Ok, please forget about the last post.  Here is the code I'm working with.

 

 

<html>
<!--
 Please see the full php-ajax tutorial at http://www.php-learn-it.com/tutorials/starting_with_php_and_ajax.html
 If you found this tutorial useful, i would apprciate a link back to this tutorial. 
 Visit http://www.php-learn-it.com for more php and ajax tutrials
 -->
<title>php-learn-it.com - php ajax form submit</title>
<head>		
	<script type="text/javascript" src="prototype.js"></script>
	<script>

		function sendRequest() {
			new Ajax.Request("test.php", 
				{ 
				method: 'post', 
				postBody: 'name='+ $F('name'),
				onComplete: showResponse 
				});
			}

		function showResponse(req){
			$('show').innerHTML= req.responseText;
		}
	</script>
</head>

<body>
  <form id="test" onsubmit="return false;">
		  <select name="name" id="name">

			<?php
        include("connect_database.php");
			$query = mysql_query("SELECT * FROM cars");
       
			while($rows=mysql_fetch_array($query)){
        $make = $rows['make'];
        
        echo "<option value='".$make."'>".$make."</option>";
        }
       	?>

		  </select>


		<input type="submit" value="submit" onClick="sendRequest()">
	</form>

	<div id="show"></div>
	<br/><br/>
	<a href="../../starting_with_php_and_ajax.html"><< back to php ajax tutorial</a>
</body>

</html>

 

 

For some reason this isn't working.

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