virtual scrolling

[staganyiParticipant]

I implemented virtual scrolling on my grid using the following post as a guide:

http://www.jqwidgets.com/jqxgrid-virtual-scrolling-with-php-and-mysql/

Everything is working fine but I have a question on how virtual scrolling actually works. I put the following js code “console.log(params);” in the rendergridrows function to see when it was triggered and what the params were. A sample output below:

Object {startindex: 0, endindex: 19, data: Array[20]} – initial load
Object {startindex: 16, endindex: 35, data: Array[36]} – page down
Object {startindex: 0, endindex: 19, data: Array[20]} – followed by a page up

This shows me that it makes a call for what it technically has already loaded (rows 0-19). Is this by design? If so, is there a way to turn it off to avoid making calls for data it has already loaded?

Thanks

[DimitarParticipant]

Hello staganyi,

In virtual mode, loaded data is not cached. This means that after “page down” only rows from 16 to 35 are loaded and rows from 0 to 15 are no longer loaded, hence the new request when you “page up”.

Best Regards,
Dimitar

jQWidgets team
http://www.jqwidgets.com/

[staganyiParticipant]

Thanks for the reply Dimitar. Is this something that is planned for a future release (cached loaded data)?

[DimitarParticipant]

Hi staganyi,

Such a functionality is not currently in our development plans.

Best Regards,
Dimitar

jQWidgets team
http://www.jqwidgets.com/

[staganyiParticipant]

Ok thanks for the reply

[Author]

Posts