SelectBox Content

[alsaffar]

Hi guys,

How can make my select boxe's content dynamicaly changed?

If I have (lets say 2 select boxes), and thier values are taken from the DB by while loop. How can I get the second select box values that are related to the first select boxt by just selecting a value from the first select box.

(i.e. the first select box have (Ferrari, Porsche, Jaguar) and the second select box is empty until I select a value from the first select box, (lets say I select Porsche) then the second select box automaticaly will have (911, 968, 959) values!!!

How can I achieve that?

[sarahk]

You should submit the form, get your code to see that all the fields aren't filled, so return the user to the form. As you go, you will need to regenerate the drop downs, and you'll use the users choices to do so.

otherwise you will need to get php to generate hidden javascript arrays and when the choice is made use javascript to access the correct array and rebuild the second select.

[alsaffar]

Thanx sarahk 4 ur help,

but any (small-sample) example code so I can start solve my problem?

[psy]

heres a way to hide the arrays in the javascript, and build a function... im not familiar with JS anymore, and im too tired to find out how to populate a select box via js, so thats upto you 🙂

// parent array //
$a=array("porsche"=>array("911","968","959"),
         "parent2"=>array("child1","child2"));

// hide child arrays in js //
echo "\n<script language='javascript'>\n";
foreach($a as $key=>$value)
{
	echo "$key=new Array(";
	for($i=0;$i<count($value);$i++)
	{
		echo "\"" . $value[$i] . "\"";
		if($i<(count($value)-1))
			echo ",";
	}
	echo ");\n";
// print js functions here //
}
echo "</script>";

if you run that, then view the source -> it will have printed the arrays in js

[netmastan]

so, If i have 50 items.. I will have to declare in array ?
is there any way, that array get values from database .

cheers