node.js - Repeat function when finished with Javascript? -

is possible repeat function when has finished. example: have datatable following input data:

name  |  birthday | checked test1   20.3.2000   null test1   20.3.2001   null   test1   20.3.2002   null

now want function take first line checked == null write table , mark checked = true after first call be

name  |  birthday | checked test1   20.3.2000   true test1   20.3.2001   null   test1   20.3.2002   null

after second call

name  |  birthday | checked test1   20.3.2000   true test1   20.3.2001   true   test1   20.3.2002   null

after third call

name  |  birthday | checked test1   20.3.2000   true test1   20.3.2001   true   test1   20.3.2002   true

data in table may manipulated while call method count(*) on checked while not work line may added inbetween.

the basic question ist. how can call function repeadetly, not given interval after previous call has completed?

following code

settimeout(function, 1000);

was working in case. not have wait function finish other function cannot access db before finished.

thx input.

Alconcel