Why output 110?

Question

function bin(num) {
var res="";
while(num>0) {
res=num%2+res;
num=Math.floor(num/2);
}
return res;
}
document.write(bin(6));

https://code.sololearn.com/W2zG4qt1DHSU/?ref=app

So 6%2 is 0 plus "" is still zero, so why starts the outcome with 1? Shouldn't it be 011 or is the output of a function always written from right to left? 🤔

Answer 1

@miro in the while loop you have
res=num%2+res
not
res+=num%2+res
#loop1
res=6%2+""
res=0
#loop2
res=3%2+"0"
res=10
#loop3
res=1%2+"10"
res=110