Calculate Your Age

long.js

(function(date_of_birth, decimal_points){
  var date_today = Date.now()
    , date_born = Date.parse(date_of_birth)
    , difference = date_today - date_born;
  
  var divided_to_seconds = difference / 1000
    , divided_to_minutes = divided_to_seconds / 60
    , divided_to_hours = divided_to_minutes / 60
    , divided_to_days = divided_to_hours / 24
    , divided_to_years = divided_to_days / 365;
  
  var decimal_divisor = 10 ** decimal_points;

  return parseInt(divided_to_years * decimal_divisor) / decimal_divisor;
})('1993-01-01', 10);

partly_minified.js

d='1993-01-01',l=10;parseInt((Date.now()-Date.parse(d))/31536000000*(10**l))/(10**l)

really_minified.js

d=Date;((d.now()-d.parse('1993-01-01'))/31536000000).toFixed(10)