Why does 3 output in the code below

Question

ver len=0
for(let ch of"Solo"{
if(ch>'a'&&ch<'z')
len++;
}
console.log(len);

Answer 1

I will add: the condition other than the above is also incorrect and the operators '>', '<' are used instead of the ones required here '>=', '<='.

Here is my example:
https://code.sololearn.com/Wj0RYJ6S3yTT/?ref=app

Answer 2

for
or