Decimal base exponents You can use 1 and 0 to represent true and false. I’ve seen this used in JavaScript game development in shorthand while loops. Note that if you use the negative start your array may be in reverse. You can also use while(i++<10) and you don't have to add the i++ later on inside the while.

negativewhile.js

var i=0;
while (i<9)
{
  //do stuff
  i++; //say
}

//shorthand

var i=9;
while(i--)
{
    //goes until i=0
}

or

var i=-9;
while(i++)
{
    //goes until i=0
}

Count down to zero