Boolean variable returns as string from javascript function

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Answer 1

You don't declare the status status variable.

Therefore, the global one (window.status) is overwritten.

However, the HTML 5 spec defines that property as a DOMString:

interface Window : EventTarget {
  attribute DOMString status;
};

Therefore, it has a setter (either exposed or internal) which stores the stringified value.

To fix it, just declare your local variable using the var statement.