fibonacci-golf.js

// first version
f=(a)=>a<2?a:f(a-1)+f(a-2);for(i=0;i<31;i++)print(f(i))

// didn't work
f=(a,b)=>(c=a<2?a:f(a-1,b&1)+f(a-2),b&print(c),c);f(31)

// let's use a loop
b=1;for(a=i=0;i<31;i++){print(a);t=b;b=a+b;a=t}

// oops same size
b=1;for(a=i=0;i<31;(i++,t=b,b=a+b,a=t))print(a)

// oh parenthesis are optional
b=1;for(a=i=0;i<31;i++,t=b,b=a+b,a=t)print(a)

// oh this can be simpler
b=1;for(a=i=0;i<31;i++,b=a+b,a=b-a)print(a)

// 1 byte saved
b=1;for(a=0;a<=832040;b=a+b,a=b-a)print(a)

// thanks @kirjavascript :)
b=1;for(a=i=0;i++<31;b+=a,a=b-a)print(a)

// 37!
b=1;for(a=0;a<1e6;b+=a,a=b-a)print(a)