JQuery checkbox loop

Question

Given a form (id = "my_form"), how do I loop over all checkboxes of the form, checking if the given one is checked or not and grabbing its name/value?

I know how to check a checkbox status given its value, but I need to loop without knowing in advance which checkboxes exist. Thanks.

user113716 · Accepted Answer · 2010-09-27 12:59:43Z

1

Example: http://jsfiddle.net/C6Kau/

$('#my_form :checkbox').each(function(){
     if( this.checked ) {
          alert( 'checked: ' + this.name + ' ' + this.value );
     } else {
          alert( 'Not checked: ' + this.name + ' ' + this.value );
     }
});

answered Sep 27, 2010 at 12:59

user113716

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Comments

Naeem Sarfraz · Accepted Answer · 2010-09-27 13:05:25Z

0

the following code will loop over all of the checked checkboxes.

$(':checkbox', '#my_form').filter(':checked').each(function(){
    var name = $(this).val();
});

edited Sep 27, 2010 at 13:05

answered Sep 27, 2010 at 12:52

Naeem Sarfraz

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2 Comments

AutoSponge Over a year ago

TypeError: Object false has no method 'each'... That's caused by is() not returning this.

Andy E Over a year ago

@AutoSponge: that's because is() tests the collection against a selector and returns a boolean (true or false). For the purposes of this answer filter() should be used instead of is().

AutoSponge · Accepted Answer · 2010-09-27 13:14:05Z

0

var box, boxes = $('#myform :checkbox'), i = boxes.length;

while (i--) {
    box = boxes[i];
    if (box.checked) {
        alert ("I'm checked");
    } else {
        alert ("I'm not checked");
    }
}

edited Sep 27, 2010 at 13:14

answered Sep 27, 2010 at 13:06

AutoSponge

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