On 25-6-2012 14:00, Larry Martell wrote: > On Mon, Jun 25, 2012 at 5:56 AM, bruno desthuilliers > <bruno.desthuilli...@gmail.com> wrote: >> On Monday, June 25, 2012 1:34:08 PM UTC+2, larry....@gmail.com wrote: >>> >>> Now they want me to add to that how long >>> the browser takes to render the page >> >> >> How would server code ever know this ? > > My assumption is that it would be collected or calculated on the > client side and sent back to the server. But I have no clue how that > could be done (or even if it could be done). >
The issue is what your client's definitions are. A browser starts rendering as soon it receives data. Is that your starting point? If your definition is that "as soon as all data is received" and until browser has fully displayed things, this is a bit more difficult. First, there's no event for this. The closest approximation is "DOMContentLoaded", which is used by JQuery's documentready. The difference between "all data received" and "DOM parsing done" is the cpu cycles it takes to parse the main DOM tree. Since your clients already are asking for fractions of seconds in the common case, this is significant. Secondly, window.onload is your stoptime event, but this doesn't fire until /everything/ is loaded. This means any networking problems with content have to time out, but for the end user, everything displays correctly. In fact, a user can click on to the next page before this even fires. So, reliably, you can't really do this and your best approximation is the event firing times for window.onload minus DOMContentLoaded, or JQuery's $(document).ready [1]. You can embed the row id for your statistics as a JavaScript variable in your template. And finally, you'd send the calculation back using Ajax requests, something you'll find plenty of howto's for on the web. [1] <http://stackoverflow.com/questions/799981/document-ready-equivalent-without-jquery> -- Melvyn Sopacua -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
