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$t.p is undefined

21/12/2009
14:06

Klaus

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18/11/2009

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I'm often getting the JavaScript error message “$t.p is undefined” located in the setGridWidth method.

…

setGridWidth : function(nwidth, shrink) {

return this.each(function(){

var $t = this, cw, initwidth = 0, brd=$t.p.cellLayout, lvc, vc=0, hs=false, scw=$t.p.scrollOffset, aw, gw=0, tw=0, cl = 0, cr;

…

I think the setGridWidth is called in a very early or late lifetime phase of the grid object when triggered via resize-events. Maybe not all data is loaded at this time or already destroyed. (maybe setGridHeight has the same issue)

Is it possible to catch those problems or to check if the main grid components are available before accessing them?

It doesn't seem to be a big problem, but the debugger always stops with this annoying error.

(working with jqGrid Version 3.6.2)

22/12/2009
09:10

tony

Sofia, Bulgaria

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Hello,

In some situations I have the same problem - my solution is to use setGridWidth within setTimeout.

Best Regards

Tony

For professional UI suites for Java Script and PHP visit us at our commercial products site - guriddo.net - by the very same guys that created jqGrid.

23/12/2009
09:56

Klaus

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Thank you.

That seems to fix some problems.

Another problem that sometimes occurs in my web app is the following ...
... when a grid instance is already destroyed (because of a view change) at the time when an outstanding ajax-call (loading new data) completes (loading the received data into the grid) this throws an error because it can't fill the grid which was already destroyed.

I know I should prevent such situations (to destroy the grid befor all open tasks and ajax-calls are finished) but how do I know if any asyc action is still in progress?

The bad thing with JavaScript errors is, that the whole webapp crashes.

Nevertheless I like your grid control plugin. Cool and highly customizable solution. Cool

Kind regards,
Klaus.

26/12/2009
11:21

tony

Sofia, Bulgaria

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Hello,

Maybe you can define ajaxStart event in ajaxGridOptions and then you will know that there is ajax available

Best Regards

Tony

For professional UI suites for Java Script and PHP visit us at our commercial products site - guriddo.net - by the very same guys that created jqGrid.

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