js checkAll or subCheck

checkboxSelect.coffee

  attached: ->
    $subQuestion = @$("input[name='question_ids[]']")
    checkedLengh = @$("input[name='question_ids[]']:checked").length
    allChecked = checkedLengh > 0 and $subQuestion.length is checkedLengh
    @$(".question-check-all").prop("checked", allChecked)


  checkAll: (e) ->
    checkboxes = $('input[name="question_ids[]"]')
    _.each checkboxes, (box) =>
      box.checked = e.currentTarget.checked

  subChecked: (e) ->
    allValue = _.map $("input[name='question_ids[]']"), (el) -> el.checked
    isAllChecked = _.every allValue
    $(".question-check-all").prop("checked", isAllChecked)