Given a string of digits, you should replace any digit below 5 with '0' and any digit 5 and above with '1'. Return the resulting string.
Note: input will never be an empty string
function fakeBin(x){
let result = "";
for(let i=0; i<x.length;i++){
if(Number(x[i])<5){
result += "0";
}else{
result += "1";
}
}
return result;
}