How to send serialize form data using JQuery if th

Question

I have this piece of code in my PHP code:

while ($row = mysqli_fetch_assoc($result))
{
    extract($row);
    echo "<tr>";
    echo "<td bgcolor='#FFFFFF'><input id='bookArray[]' name='bookArray[]' type='checkbox' value='$book_id' />$book_id</td>";
    echo "<td bgcolor='#FFFFFF'>$threat_name</td>";
    echo "</tr>";
}

In HTML page, I want to use jQuery serialize() method to sent array of selected books in bookArray[]. In my JavaScript,

var selectedbooks = $("book_form").serialize();
alert (selectedbooks); 

In the alert message box, i did not get any value (empty string).

Previously when i am using Prototype, it worked nicely.

Answer 1

I have come up with a method that will, when the data is sent using post

on the other side lets you access your elements using $_['post']['name']

If it is an array (eg a multiple select) then on your server you can access it as an array again $_POST['myselect'][0]...

Code: Function to serialize form data for post

function serializePost(form) {
    var data = {};
    form = $(form).serializeArray();
    for (var i = form.length; i--;) {
        var name = form[i].name;
        var value = form[i].value;
        var index = name.indexOf('[]');
        if (index > -1) {
            name = name.substring(0, index);
            if (!(name in data)) {
                data[name] = [];
            }
            data[name].push(value);
        }
        else
            data[name] = value;
    }
    return data;
}

Answer 2

jQuery 1.4

var myform = $("book_form").serialize();

decodeURIComponent(myform);

Answer 3

it's not a problem with jQuery Post, it's with serialize you can do this:

    var my_query_str = ''; 
    $("input[@type='checkbox'][@name='books']").each( function() { 
       if(this.checked) { my_query_str += "&bookArray[]=" + this.value; } 
    }); 
   jQuery.post(
      "saveBookList.php",
      "dummy_data=a" + my_query_str ,
       function(responseData){   
          $("#save-result").empty().append(responseData); 
       }, 
       error: function() { 
            $("#save-result").append("An error occured during processing"); 
       }
   }); 

but all you really have to do is replace '[' & ']' back to themselves after serializing them. because serialize(); changed them to their htmlencoded value!

Answer 4

work correctly jquery =>

var data = $('form').serialize();
            $.post(baseUrl+'/ajax.php',
                    {action:'saveData',data:data},
                    function( data ) {
                        alert(data);
                    });

php =>

parse_str($_POST['data'], $searcharray);
    echo ('<PRE>');print_r($searcharray);echo ('</PRE>');

output =>

[query] => 
[search_type] => 0
[motive_note] => 
[id_state] => 1
[sel_status] => Array
    (
        [8] => 0
        [7] => 1
    )

and You can do whatever what you want like with array data, thanks to Aridane https://stackoverflow.com/questions/1792603

Answer 5

easy: serialize().replace(/%5B%5D/g, '[]')

Answer 6

var arTags = new Array();

jQuery.map( $("input[name='tags[]']") , function(obj,index)
{
   arTags .push($(obj).val());
});

var obj = {'new_tags'           : $("#interest").val() ,
           'allready_tags[]'  : arTags };

var post_data = jQuery.param(obj,true);

$.ajax({
      type :  'POST',
      url  :  'some_url',
      data :  post_data,
      dataType : "html",
      success: function(htmlResponse)
      {

      }
});