You can add hidden form elements to the page with the parent dropdown and they will be passed with the parent dropdown form when it submits to the child dropdown plugin page.GET and POST work the same way, so you could use either.
Dear Ray
I was thinking like that but can't figure out to pick the value of the field from child page as in my parent page inside the div it shows like
<?php echo((isset($WA_section_1586802530391))?$WA_section_1586802530391->Body:"") ?>
but on the child page the actual value which i need to pick is <?php echo($bookSection->getColumnVal("SectionID")); ?>
Pls guide me here.
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Here is the code of my parent page
<div class="row">
<form action="index.php" method="post" id="jumpbooks" title="For book change" accept-charset="UTF-8">
<div id="book" class="col-sm">
<select name="book" class="custom-select" id="book" onChange="framework_load_plugin_url('section.php',document.getElementById('jumpbooks'),'section','../../','');return document.MM_returnValue">
<?php
while(!$hadithBookList->atEnd()) { //dyn select
?>
<option value="<?php echo($hadithBookList->getColumnVal("BookID")); ?>"<?php if (!(strcmp($hadithBookList->getColumnVal("BookID"), ($mainHadith->getColumnVal("BookID"))))) {echo "selected=\"selected\"";} ?>><?php echo($hadithBookList->getColumnVal("BookNameBD")); ?></option>
<?php
$hadithBookList->moveNext();
} //dyn select
$hadithBookList->moveFirst();
?>
<input type="submit">
</select>
</div>
<div class="col-sm" id="section"><?php echo((isset($WA_section_1586802530391))?$WA_section_1586802530391->Body:"") ?>
</div>
</form>
</div>
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I think in order to send query by GET method I have to use another form to pick the value and then pass to URL as in this present form if i select GET method the drop down does not work,
