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how can i calculate the number of checkboxes that a user has checked using jquery?
what i want to do is limiting the number of checking for checkboxes in a form to 10 for example and when a user exceeds this range display a warning message.
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If none of the methods above work, you probably haven't imported jQuery yet. To import jQuery, paste this code into the
<head>of your HTML.I actually had the same problem while creating a product ordering page, and I wanted it to count The number of products in the cart at the order confirmation page. I referred to this post and tried all of the methods. Then I found out I did not import jQuery, so the
$(':checkbox:checked')did not work.There are multiple methods to do that:
Method 1:
Method 2:
Method: 3
This should work:
you ought to use
or
if you have more forms on one page
.size() (method number 1 in current accepted answer) is deprecated since jQuery 1.8