Question

I try to use new Function() in a calculator and I find it does not have access to the arguments I’m passing to the function it’s in. I’m using it like this:

function go(a, b, c) {
    return new Function('return a + b + c')();
}

go(4, '/', 2);

But it is not working because it says that a is undefined. Is there any way to get around this?

Answer 1

You probably want:

function go(a, b, c) {
    return new Function('return ' + a + b + c + ';')();
}

go(4, '/', 2);

But this isn’t the correct way to go. Make a distinct function for each action you’re supporting.