Default: false [Since 6.5.1]
Default: true [Since 7.0.1]
- Available for ZK:
It specifies whether to disable the use of HTML5's Page Visibility API for handling Comet-based server push.
By default, ZK detects if the browser support the HTML5's Page Visibility API, and then use the smart connection by page visibility API if available. The connection use for the server side is much more efficient since it doesn't hold the connection if the page is invisible. However, if you prefer to disable it, you could specify this library property to true.
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