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jQuery: Serialize form data including selects with multiple options

Posted on 2014-10-14
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Last Modified: 2014-10-21
The problem is that serialize() does not properly serialize multiple options but instead it repeats the names with the different values.  I need a jQuery function that works like serialize but that manages multiple select options in a better way.

http://jsfiddle.net/bvgsqarw/
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Test</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
<script type="text/javascript">
 $(document).ready(function() {
  $('#order').submit(function() {
   alert( $(this).serialize() );
   return false;
  });
 });
</script>
</head>
<body>
 
<form id="order" method="post" action="./">
 <input name="input1" type="text" value="Hello World" />
 <input name="input2" type="text" value="World" />
 <select name="product" size="5" multiple="multiple">
  <option value="1" selected="selected">1</option>
  <option value="2">2</option>
  <option value="3" selected="selected">3</option>
  <option value="4" selected="selected">4</option>
  <option value="5" selected="selected">5</option>
 </select>
 <input type="submit" value="submit" />
</form>

</body>
</html>

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Question by:hankknight
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2 Comments
 
LVL 33

Expert Comment

by:Big Monty
ID: 40380630
how do you want it to handle multiple options?

any other way would require you writing a custom function
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LVL 82

Accepted Solution

by:
leakim971 earned 500 total points
ID: 40380644
test page : http://jsfiddle.net/yt88wnwe/
$(document).ready(function() {
    $('#order').submit(function() {
        var ser = $("[name]").not("select").serialize();
        $("select", this).each(function(i, select) {
            var s = "";
            $("option:selected", select).each(function() {
                s += (s.length>0?",":"") + $(this).val();
            });
            ser += (ser.length>0?"&":"") + $(select).attr("name") + "=" + s; 
        });
        alert(ser);
        return false;
    });
});

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