jQuery use .get().join() methods to group checkbox values together in email receipt.

jquery-get-join-checkbox-group-values.html

/**
 * CHECKBOX GROUP
 * 
 * Uses .get().join() methods to group values together in email receipt.
 * @return     array  
 */
function Populate(){
  var cbArray = [];
    vals = $('#cb_type_id input[type="checkbox"]:checked').map(function() {
        return this.value;
    }).get().join(',');
    console.log(vals);
    $('#record_type_array').val(vals);
    console.log('asdf: ' + $('#record_type_array').val());
}

$('#cb_type_id input[type="checkbox"]').on('change', function() {
    Populate()
}).change();