Multidimensional array of multi checkbox group values jQuery post array AJAX

Question

I have the following code. I want to add/remove check-box values to an array and pass to a JavaScript ajax call. I want to be able to pass all sort array to on array for the ajax call. Each time a checkbox is changed it updates the array, which in turn should update the array that's passed to ajax.

<input class='sort1' type='checkbox' value='' name='sort1' />
<input class='sort1' type='checkbox' value='' name='sort1' />
<input class='sort1' type='checkbox' value='' name='sort1' />

<input class='sort2' type='checkbox' value='' name='sort2' />
<input class='sort2' type='checkbox' value='' name='sort2' />

<input class='sort3' type='checkbox' value='' name='sort3' />
<input class='sort3' type='checkbox' value='' name='sort3' />
<input class='sort3' type='checkbox' value='' name='sort3' />
<input class='sort3' type='checkbox' value='' name='sort3' />


var arr_sort = {}
var arr_sort1 = {};
var arr_sort2 = {};
var arr_sort3 = {};

    $(".sort1").delegate("input[type='checkbox']", 'change', function() {
        var $this = $(this);

        if ($this.prop('checked')) {
            arr_sort1[$this.attr('name')] = $this.val();
        } else {
            delete arr_sort1[$this.attr('name')];
        }

        ajax_call();

    });

$(".sort2").delegate("input[type='checkbox']", 'change', function() {
        var $this = $(this);

        if ($this.prop('checked')) {
            arr_sort2[$this.attr('name')] = $this.val();
        } else {
            delete arr_sort2[$this.attr('name')];
        }

        ajax_call();

    });

$(".sort3").delegate("input[type='checkbox']", 'change', function() {
        var $this = $(this);

        if ($this.prop('checked')) {
            arr_sort3[$this.attr('name')] = $this.val();
        } else {
            delete arr_sort3[$this.attr('name')];
        }

        ajax_call();

    });

function ajax_call(){

    $.ajax({
         type: 'POST',
         url: "file.php",
         data: { thisaction: thisaction, sort: arr_sort},
         success: function(data){ 
             $("#results").html(data);
            }
        }); 

}

i could maybe do this, but I want to pass the array to php to handle especially if there are more check-box groups added.

Outcome

array (
   "sort1" => array("1","2","3"),
   "sort2" => array("this","that"),
   "sort3" => array("other","ok")
)

or

array (
   "sort1" => array("1","2","3"),
   "sort2" => array("this")
   "sort3" => array()
)

Could you make the question more specific? I don't understand what you're asking. — nnnnnn
– nnnnnn, Commented Sep 6, 2011 at 1:46

Levi Morrison · Accepted Answer · 2011-09-06 04:50:41Z

0

Answer: http://jsfiddle.net/morrison/XS48K/

Notes:

Each name needs to be unique. This is good form anyway. I named them box# but you should use more appropriate names that describe what they are.
Use data attribute to group objects. This is the semantic way to do this.
Your inputs should be in a form tag with an id. This helps you use jQuery selectors to get the objects that you want.
I erased the value attribute. You can put a value back in if you'd like to. I just would prefer not see the value attribute in there.
You should store all of them in an object or array. This is so you can manage ALL of the checked states in one place.

edited Sep 6, 2011 at 4:50

answered Sep 6, 2011 at 1:59

Levi Morrison

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9 Comments

atma Over a year ago

@nnnnnn, you need to know that delete do not remove an element from an array it will only set it as undefined, so you can get something like group1:{box1:undefined, box2:undefined, box3:undefined }

madphp Over a year ago

get this error$this.prop is not a function [Break On This Error] if ($this.prop('checked')) {

atma Over a year ago

.prop() was introduced only in jQuery 1.6

Levi Morrison Over a year ago

@atma Tested in modern browswers the property was removed. I'm not sure what the full browser range is.

Levi Morrison Over a year ago

@madphp Unless you have some reason to not upgrade, you really ought to upgrade jQuery versions.

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