jQuery: grabbing form values

If form is submitted to a function using onsubmit(), how can I get an array of the values of all checkboxes with name='values[]' ?

EDIT: originally I mentioned radio buttons, this is wrong - checkboxes is correct.

EDIT: line below only gets the value of the first one, obviously

$("input[name='values[]']:checked").val()

Also开发者_如何学Go, how can I get the number of checkboxes that were checked when the form was submitted?

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val returns a single value. To get all values, use map:

var selectedValues = $("input[name^='values']:checked").map(
       function(){ return $(this).val(); }).get();

This returns an array with all selected values. To get a dash-delimited string:

var dashed = selectedValues.join('-');

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try

$('#formId').serializeArray();