PLEASE HELP, I don't understand the logic behind both programs giving 100 and 2 as their output.

Question

// First program
function tobin(num) {
var res="";
while(num>0){
res=num%2+res;
num=Math.floor(num/2);
}
return res;
}
document.write(tobin(4));

// Second program
var a = 10, b = 20, c = 30;
if (c > b > a) {
console.log('1');
} else {
console.log('2');
}

Answer 1

First:
It's just converted to binary. If you have never seen something like this, you can just run through it:
res = num % 2 + res -> num % 2 is 0, so res is 0
num = Math.floor(num / 2) -> num is 2
num % 2 is still 0, so res is 00
Math.floor(num / 2) -> num is 1
num % 2 is 1, so res is 100
Math.floor(num / 2) is 0, so the loop stops there

Second:
c > b is true, meaning it will be converted to true > a. True converted to a number is one, and 1 > 10 is false.

Answer 2

Thanks Airree, that was crisp and crystal clear

Answer 3

The first program outputs (1+3+5+7+9)*4=100
The second program outputs (30>20)==1(true) <10==false (0) = 2 (console.log) 🤔🤗