What does document.body.offsetHeight do before window.print ()?

Question

Sniffing gmail Print all link source code, there is something like this:

<script> function Print(){document.body.offsetHeight;window.print()}; </script> </head> <body onload="Print()">

What does document.body.offsetHeight do?

+6

javascript gmail

systempuntoout May 03, '10 at 20:14

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1 answer

Justin niessner · Accepted Answer · 2010-05-03T20:16:28+0000

It forces WebKit-based browsers to download a full set of content before printing (including images, styles, etc.).