php javascript select - php

Question

i need a help
in php i have a select box like this
<?php
$perpage = 5;
$total = 128;
$num = ceil( $total / $perpage );
$i = 1;
echo "<FORM NAME=\"form1\">";
echo "Select <SELECT NAME=\"select\" onChange=\"goto(this.form)\" SIZE=\"1\" >";
echo "<OPTION VALUE=\"\">----Select Page----";
for($i = 1; $i <= $num; $i++)
{
$sel = $i;
$goto = ($i - 1) * $perpage;
if($goto == 0) { $goto = ''; }
echo "<OPTION VALUE=\"http://localhost/CI_doctrine/blog/filmnews/" . $goto . "\">" . $i . "";
}
echo "</SELECT> Page";
echo "</FORM>";
?>
javascript code is here
function goto(form) {
var index = form.select.selectedIndex;
if (form.select.options[index].value != "0") {
window.location = form.select.options[index].value;
form.select.selected = form.select.options[index].value;
}
}
the code is working fine but i want to change the selected option to set the selected number after the page redirection but here iam getting the "select page" as the selected option
any help appreciated.
thank you from your friend.

Answer 1

Once you redirect, that page is unloaded and a new page loaded (even if it has the same items). When the new page loads, you want to do:
window.onload = function() {
var i, options = form.select.options, curUrl = window.location.href;
for (i = 0; i < options.length; i++) {
if (options[i].value == curUrl) {
form.select.selectedIndex= i;
break;
}
}
}
This will select the current URL. Make sure the URLs in the select options are full URLs (including http://). Also, window.onload is the DOM1 way. You should probably use a real library to deal with this.
Alternatively, you can also select the right input in PHP using the same basic approach.