Question

Hello here is my code:

<script type="text/javascript">
function changePage()
{
    selectedValue = document.forms['f1'].s1.value;
    newLocation = "http://127.0.0.1:8080/PolPlan/branze.php?page="+selectedValue;
    window.locatoion = newLocation;
}
</script>

<form name="f1">
   <select name="s1" onChange="javascript:changePage()">
      <option value="1">strona 1</option>
      <option value="2">strona 2</option>
   </select>
</form>

<?php

$selectedValue = $_GET['s1']; 
echo $selectedValue;

?>

I get error on line:
“$selectedValue = $_GET[‘s1’];”
Error message: Notice: Undefined index: s1
Please help me with it.

Answer 1

Change

$selectedValue = $_GET['s1']; 

to

$selectedValue = $_GET['page']; 

if you want to use s1 you need to submit the form

<form name="f1" action="/PolPlan/branze.php" method="get">
<select name="s1" onChange="document.forms['f1'].submit()">