Answer 1

Probably because the calculator on your phone does not just consist of one eval. It can probably be resolved with regular expressions

Answer 2

Why would it be the same?

Answer 3

Well, that's because the input is invalid. That is pretty obvious, I thought you would know that. But you can still catch the error though

Answer 4

try {
calMo.value = eval(calMo.value);
} catch (e) {
calMo.value = "Invalid input!";
}

Seriously, you don't know this?

Answer 5

Well, I have never heard of that. Maybe you could do it with regular expressions, but I don't think you need multiple possibilities for multiplication in a simple calculator.

Answer 6

~ swim ~ Yes, I heard of that, but I was talking about 2(2.

Answer 7

You start evaluating from there first. But I don't get why you are asking this, since it works perfectly. eval does that by default

Answer 8

Mofey I can't help you, since a) this is your project, not mine, and b) I couldn't help even if I wanted to, because I have never used regular expressions seriously

Answer 9

https://www.sololearn.com/learn/9704/?ref=app