fizzbuzz - as short as I can - demo: http://goo.gl/Ssyal

fizzbuzz.js

i=0;do console.log(++i%15?i%3?i%5?i:'buzz':'fizz':'fizzbuzz');while(i<100)

Example: jsconsole output

Let's see if we can get some code tennis going...

Damn, f='fizz',b='buzz',i=1;do console.log(i%15?i%3?i%5?i:b:f:f+b);while(++i<=99) is actually 1 byte longer… (And less readable!)

Heh - yeah, I tried that already - seems daft that I repeat the text, but it's shorter :-P

71 bytes (3 bytes shorter than the original), by using while instead of do…while:

f='fizz',b='buzz',i=0;while(++i<101)console.log(i%15?i%3?i%5?i:b:f:f+b)

…which is only 65 chars using alert instead of console.log (as per the original challenge):

f='fizz',b='buzz',i=0;while(++i<101)alert(i%15?i%3?i%5?i:b:f:f+b)

Even shorter (70 bytes):

i=0;while(++i<101)console.log(i%15?i%3?i%5?i:'buzz':'fizz':'fizzbuzz')

…which is only 64 chars using alert instead of console.log:

i=0;while(++i<101)alert(i%15?i%3?i%5?i:'buzz':'fizz':'fizzbuzz')

Updated my comment :)

Yours only goes to 99 - but easily fixed: ++i<=100 and you're still 2 characters less.

Passes crown

ok, so this is obviously not the " smallest", but I'm out to lunch and can't really play : / https://gist.github.com/838765

@remy: ++i<=100, or ++i<101 which is even shorter :)

while I'm out to lunch... Hehehe... Can someone try this using node repl... Without the console.log()?

I was out today, but I'm back now. Here's my version, weighing in at 64 characters.

for(i=0;i++<100;)console.log((i%3?'':'Fizz')+(i%5?'':'Buzz')||i)

I think The Cowboy just hit that one out of the park (note that you want 101 and not 100 - because you're missing the last fizzbuzz - still, you win!)

My example counts from 1 to 100!

Doh!

Do I win? No. 63 chars

i=100;while(i--)console.log((i%3?'':'Fizz')+(i%5?'':'Buzz')||i)

@ryanseddon You get an extra FizzBuzz at 0.

FWIW, for(init;condition;) will always be one character less than init;while(condition).. but still, I'd imagine that per the rules, you have to count upwards, from 1 to 100.

62 chars jsconsole output

for(i=0;++i<101;console.log(i%5?f||i:f+'Buzz'))f=i%3?'':'Fizz'