Modulus

for(i=1,j=5.5;i<10;i++) {
... console.log("i=",i," j=",j,"Modulus j%i=",j%i);
... }

In node.js:

i= 1 j= 5.5 Modulus j%i= 0.5
i= 2 j= 5.5 Modulus j%i= 1.5
i= 3 j= 5.5 Modulus j%i= 2.5
i= 4 j= 5.5 Modulus j%i= 1.5
i= 5 j= 5.5 Modulus j%i= 0.5
i= 6 j= 5.5 Modulus j%i= 5.5
i= 7 j= 5.5 Modulus j%i= 5.5
i= 8 j= 5.5 Modulus j%i= 5.5
i= 9 j= 5.5 Modulus j%i= 5.5

In Espruino 1v61:

i= 1 j= 5.5 Modulus j%i= 0
i= 2 j= 5.5 Modulus j%i= 1
i= 3 j= 5.5 Modulus j%i= 2
i= 4 j= 5.5 Modulus j%i= 1
i= 5 j= 5.5 Modulus j%i= 0
i= 6 j= 5.5 Modulus j%i= 5
i= 7 j= 5.5 Modulus j%i= 5
i= 8 j= 5.5 Modulus j%i= 5
i= 9 j= 5.5 Modulus j%i= 5