how to stop refreshing page on onchange="this.form.submit()" - php

Question

see my client site first to get an idea.
In above site, i have a giftfinder box in right side. There are 3 select boxes. currently I'm using 3 forms for these 3 select boxes which means each drop down select box is embedded into form. When you select the first drop down select box, it picks one and second select box's value will be determined which value is selected from first select box. So if you choose Man, then all athe related occasions of Man will be dispalyed into seconds drop down select box. Its working fine.
But the problem is it refreshes everytime you select the first drop down box.
I don't want to refresh page. it must select the value and pass the value so seconds select box can determine its related values.
so I'm thinking to us ajax. but no success.
So i included some code for the first drop down select box.
this is mix of html and php and wordpress.
<div class="select-one">
<form id="searrec" method="post" action="">
<select name="selectionRecipient" id="selectionRecipient" onchange="this.form.submit();">
<?php
$results_rec = get_option('current_recipient');
if(isset($_POST['selectionRecipient'])){
$results_rec = $_POST['selectionRecipient'];
update_option('current_recipient', $results_rec);
$results_rec = get_option('current_recipient');
}
?>
<?php
//asort($result_rec);
$t_name_arr = array();
foreach($result_rec as $rec):
$t_id = $rec->term_id;
$term = get_term($t_id , 'category' );
$t_name_arr[] = $term->name;
endforeach;
//print_r($t_name_arr);
rsort($t_name_arr);
foreach ($t_name_arr as $t_name):?><option class="rec_val"<?php if($results_rec==$t_name){ echo 'selected="selected"';}?>value="<?php echo $t_name;?>"><?php echo $t_name;?></option>
<?php endforeach;?>
</select>
<input type="hidden" id="submitrec" value="Search" />
</form> -->
</div>
So I'm am using form method post and using $_POST to retrieve the selected value and pass it to $results_rec variable.
Later in the code, I'm using if.. else to determine if $results_rec =='Man' then display certain items which are related to Man and so forth.
So what I want is not to refresh the page while I select item from first drop down select box.
Please help.

Answer 1

change this:
<select name="selectionRecipient" id="selectionRecipient" onchange="this.form.submit();">
to this:
<select name="selectionRecipient" id="selectionRecipient">
and the jquery:
$("#searrec").submit(function(e) {
e.preventDefault();
// your code
return false;
});
EDITED:
use this to get the selected index (number)
var index = $("#selectionRecipient")[0].selectedIndex;
or value:
var value = $("#selectionRecipient")[0].value;
Then you can call an ajax perhaps: (assuming the other selection box has "id=other_select"
$.ajax({url:"index.php",type:"POST",data {type:"populate",index:2,value:"option1"},dataType:"json",
success: function(data) {
// data (json) returned from server so populate other selection boxes with that..
// in this example 'data' is an array, coming directly from server (see below the .php)
$("#other_select")[0].selectedIndex = 0;
for(var x in data) {
$("#other_select")[0].options[x] = new Option(data[x]);
}
}
})
in your .php i assume you get a list (etc. database) to populate the other selection list (in client). This code could looks like:
if (isset($_POST["type"]) && $_POST["type"]=="populate") {
echo json_encode(array("option1","option2","option3"));
exit(1);
}

Answer 2

$('#searrec').submit(function () {
//do some form submit work here
return false;
});

Answer 3

You'll have to use an AJAX call to populate the other select boxes based on whatever you've selected in the first one without reloading the page.
I suggest you take a look at jQuery's AJAX functionality. Read up on $.ajax and $.post - with them you could submit the value that you've selected in the first listbox to a PHP script and then based on that value return and populate the other select boxes.

Answer 4

Use AJAX to update the other selects without refreshing the page. Use jQuery to make AJAX easy.
This question will help:
Change the selected value of a drop-down list with jQuery

Answer 5

$('#searrec').submit(function(e){
e.preventDefault();
});

Answer 6

You should delete event onchange="this.form.submit(); from combobox
And use ajax with jquery:
$("#searrec").onchange(function() {
$.ajax({
url:"",
success:function(response){
alert("success");
}
});
});

Answer 7

Guys its fixed.
Plz have a look at http://giftideasitems.com/.
See gift finder box and see how it works.
I used iframe and embedded the forms, drop down coding there. thats it.
Even I used onchange="this.form.submit()" and page doesnot referesh, actually page refresh .... but not the main page, only the iframe is refreshing which is fine. this is exactly what i wanted.
<div id="gift-finder">
<div class="gift-finder-form">
<iframe name="inlineframe" src="code.php" frameborder="0"
scrolling="auto" width="200" height="180"
marginwidth="0" marginheight="0" id="gift-iframe">
</iframe>
</div>
This is my iframe code and see src, i used code.php; so all code is in separate place.
Though I had to modify some css, but anyways this is fine.
Thanks everyone who contributed yesterday.