javascript - .keyup event not working -

$('input[name="list_checkbox_ids[]"], #frame, input[name="del_list_ids[]"]').on('keyup', function() {    $('#button_link').prop('disabled', ! $('input[name="list_checkbox_ids[]"]:checked').length); }); 

the scenario is, click on search button generates list of checkboxes. button_link should defaulted disabled until select 1 of checkboxes. in above code, howcome not remove disabled? tried looking errors in console cannot find one. pls help.

list_checkbox_ids dynamically loaded on page.

can change

this

$('input[name="list_checkbox_ids[]"], #frame, input[name="del_list_ids[]"]').on('keyup', function() {    $('#button_link').prop('disabled', !$('input[name="list_checkbox_ids[]"]:checked').length);  }); 

into this(using event delegation) dynamically created content

 $(document).on('keyup','input[name="list_checkbox_ids[]"], #frame, input[name="del_list_ids[]"]', function() {    $('#button_link').prop('disabled', !$('input[name="list_checkbox_ids[]"]:checked').length);  });