Kiwango cha 7.7 cha Kazi za JavaScript

Задание 1

Weka safu yenye nambari. Hesabu jumla ya idadi ya tarakilishi 3 katika nambari zote za safu iliyopewa.

Задание 2

Andika programu ambayo itaunda safu ifuatayo:

javascript[
  '1',
  '12',
  '123',
  '1234',
  '12345',
]

Задание 3

Safu imetolewa:

javascriptlet affairs = [
  {
    date:  '2019-12-29',
    event: 'name1',
  },
  {
    date:  '2019-12-31',
    event: 'name2',
  },
  {
    date:  '2019-12-29',
    event: 'name3',
  },
  {
    date:  '2019-12-30',
    event: 'name4',
  },
  {
    date:  '2019-12-29',
    event: 'name5',
  },
  {
    date:  '2019-12-31',
    event: 'name6',
  },
  {
    date:  '2019-12-29',
    event: 'name7',
  },
  {
    date:  '2019-12-30',
    event: 'name8',
  },
  {
    date:  '2019-12-30',
    event: 'name9',
  },
]

Pata tarehe zipekee kutoka kwa safu hii, yaani kama ifuatavyo:

javascript['2019-12-29', '2019-12-30', '2019-12-31']