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A comment on Creating Web Traffic “Out of Thin Air”.

Re:Creating Web Traffic “Out of Thin Air” by pgrote on Wednesday December 13, 2017 @03:24PM (#15917333)
What is the technical explanation of the invisible window mentioned? Do all browsers allow it? Will an ad blocker stop it?

"A user often has no idea this is happening in the background, and in some cases porn sites load the pop-under as an invisible window that can’t be seen."

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Re:Creating Web Traffic “Out of Thin Air” by f2n on Wednesday December 13, 2017 @03:40PM (#15917455)
It's not terribly complicated JavaScript. A pop-behind is generally done by calling Window.open() to open a new window, then Window.focus() to re-focus the original window. Another method I've seen is opening a pop-up with the original site, then redirecting the original window to the advertising site. The MDN page for Window.open()[0] actually mentions some of the restrictions around opening windows and focusing other windows that have been added to browsers.

[0] https://developer.mozilla.org/en-US/docs/Web/API/Window/open

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