When will the fourth argument to open() useful?
A
When the second argument names a retired window
B
When the first argument names an existing window
C
When the second argument names an existing window
D
When the first argument names a retired window
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.