1   countSum = (max)->
 2     loading()
 3     sum = cnt = 0
 4     while(cnt<=max)
 5       sum += cnt++
 6     sum
 7 
 8   $('#sum_without_worker').on('click', ->
 9     loading()
10     sum = countSum(sumMax)
11     log "getSum: #{sum}"
12     loaded()
13   )