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When will the fourth argument to open() useful?

When will the fourth argument to open() useful? Correct Answer When the second argument names an existing window

The fourth argument to open() is useful only when the second argument names an existing window. This fourth argument is a boolean value that indicates whether the URL specified as the first argument should replace the current entry in the window’s browsing history (true) or create a new entry in the window’s browsing history (false). Omitting this argument is the same as passing false.

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