Guriddo » Topic: [jqGrid 4.0] Virtual Scrolling problems in big data on Web server

[jqGrid 4.0] Virtual Scrolling problems in big data on Web server

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[jqGrid 4.0] Virtual Scrolling problems in big data on Web server

This topic has 11 replies, 4 voices, and was last updated 14 years, 10 months ago by IKB56.

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June 2, 2011 at 1:20 pm #78487

IKB56
Participant

Hello
I've tried to display a virtual scroll through more data than 50,000,000 lines can not scroll work.
When I move the slider of the scroll bar to display the page location is invalid.
jqGrid a bug?, please tell me how to bugfix.

jQuery(“#scroll”).jqGrid({
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Viewing 11 replies - 1 through 11 (of 11 total)

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June 2, 2011 at 7:16 pm #98173

Leandro Irgang
Participant

Hi

i am not sure, but try increase value of rowNum, because 50.000.000 / 100 = 500.000 pages on only around 700px of vertical scrollbar height will give to us around 0.014px (of scrollbar) for each page.

Leandro Irgang

June 2, 2011 at 8:41 pm #98174

IKB56
Participant

Hello,

Probably, yes.

I's a matter of logic to calculate the page position (request to the server). When the page position is less than 0, the slider of the scroll bar to move 1 pixel will be assigned a few pages.

Which parts of Java Script, what should I fix it?

IKB56

June 2, 2011 at 9:35 pm #98145

IKB56
Participant

Additional

June 3, 2011 at 9:20 am #98148

tony
Keymaster

Hello,

The problem of more than 500 000 records lie in the browsers limitations itself and the way we realize virtual scrolling.

The problem is hard to be fixed, but I think this is not impossible. This requiere a lot of eforts and calculations.

Kind Regards

June 3, 2011 at 12:44 pm #98151

IKB56
Participant

Hello,

I understood the limitations of the browser and that efforts are needed to fix the problem. But I think the virtual scrolling is required huge data support. Near future, I hope that the huge data is supported by the virtual scrolling.

I would like to complete this topic. Thank you.

IKB56

June 3, 2011 at 5:29 pm #98153

kobruleht
Participant

You can switch to slickgrid. According to SlickGrid Developer answer in stackoverflow.com where this issue was discussed, this is resolved in SlickGrid.

June 3, 2011 at 8:32 pm #98155

IKB56
Participant

Thank you for

June 4, 2011 at 1:06 am #98157

Leandro Irgang
Participant

Hello… I will try to simulate this problem later and see how i can help

Leandro Irgang

June 4, 2011 at 4:59 pm #98161

IKB56
Participant

Hello,

This is my test program. Please refer to the huge test data.

—index.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd“>

Virtual scrolling Test

jQuery(document).ready(function(){

June 4, 2011 at 8:37 pm #98165

kobruleht
Participant

code:

$totalrows = isset($_REQUEST['totalrows']) ? $_REQUEST['totalrows']: false;
if($totalrows) {
$limit = $totalrows;
}

why totalrows are checked? jqGrid does have such parameter in doc

June 4, 2011 at 8:52 pm #98166

IKB56
Participant

No
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