javascript - jQuery checkboxes manipulation - Stack Overflow

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Using jQuery, how can I:

1. Have all checkboxes on a page turned checked on or off?

2. Loop through all the checkboxes on the page which are selected. I.e something like this

   $(sel-cboxes).each(myFunction);
   

So myFunction would be called on each selected checkbox.

Thanks in advance!

Using jQuery, how can I:

1. Have all checkboxes on a page turned checked on or off?

2. Loop through all the checkboxes on the page which are selected. I.e something like this

   $(sel-cboxes).each(myFunction);
   

So myFunction would be called on each selected checkbox.

Thanks in advance!

• javascript
• jquery

Share Improve this question Follow edited Oct 6, 2020 at 16:23 Alex 1,58011 gold badge1515 silver badges2727 bronze badges asked May 16, 2009 at 11:48 AliAli 267k269269 gold badges592592 silver badges786786 bronze badges

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5 Answers 5

Sorted by: Reset to default 9

1: To check all checkboxes

$("input:checkbox").attr('checked', true);

To uncheck all

$("input:checkbox").attr('checked', false);

2:

$("input:checkbox:checked").each(myFunction);

1- Have all checkboxes on a page turned checked on or off?
Edited: (correction)

$(':checkbox').attr('checked',true);

2- Loop through all the checkboxes on the page which are selected. I.e something like this

$(':checkbox :checked').each(function() {

});

This jQuery Selector will find all checkboxes that have been checked. and this inside the each function will be assigned to this individual checkbox.

$(":checkbox:checked").each(function(){
  doSomething(this);
})

If you want to turn all checkboxes on then use this:

$(":checkbox").attr("checked","checked")

$("input:checked")

http://docs.jquery./Selectors/checked

1: Set the all to be of the same class and then

$(.classname).attr('checked', true);

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