Question

I have this function:

function RemoveProduct() {
    if (confirm("Poista?") == return true) {
        return true;
    } else {
        return false;
    }
}

When you click a “remove” button on the page, it should ask if it should remove a product, and if the answer is yes, it will remove it.

But as far as I know, I can’t use another brackets on the if sentence conditions?
How this should be done?

Answer 1

When you compare a return value to true you shouldn’t use return true, just true:

function RemoveProduct() {
  if (confirm("Poista?") == true) {
    return true;
  } else {
    return false;
  }
}

You don’t even need to do the comparison, as the result from confirm is a boolean value:

function RemoveProduct() {
  if (confirm("Poista?")) {
    return true;
  } else {
    return false;
  }
}

And you don’t even need the if statement, you can just return the result from confirm:

function RemoveProduct() {
  return confirm("Poista?");
}

Remember to use return when you use the function in an event. Example:

<input type="submit" onclick="return RemoveProduct();" />