ex13-01.html(Date)

ex13-01a.html(Day.js)

ex13-01b.html

ex13-01c.html(random)

ex13-01d.html

ex13-02.html(Math.random)

ex13-03.html(for문)

ex13-03a.html

ex13-03b.html

ex13-03c.html

ex13-03d.html(구구단)

ex13-03e.html(좌석배치표)